Evaluating the feasibility of pangolin farming and its potential conservation impact (Open Access)
Pangolins are threatened by overexploitation for local and international use. They are subject to an international commercial trade ban, and are also the focus of other interventions, including attempts at commercial captive breeding. The impact that the latter could have on the conservation of wild populations deserves consideration. We critically evaluate the feasibility of commercial captive breeding (or farming) of pangolins to displace wild collection and assess its potential conservation impact on pangolin conservation using a recently published framework developed for this purpose. Of the 17 conditions posited that need to be met for supply-side interventions to displace wild collection, we find that pangolins meet a maximum of only six conditions. This analysis suggests that pangolin farming will not displace wild collection in the near future. Major barriers include an inability to breed pangolins on a commercial scale and available data suggest that it would be unprofitable. The immediate impact of pangolin farming on conservation of the species’ is unclear, but it is unlikely to benefit the conservation of wild populations. If commercial captive breeding were possible, it is uncertain how it would affect economic incentives for poaching, interactions between legal and illegal markets, stockpile policies, and how consumers and Traditional Chinese Medicine (TCM) practitioners would respond. To understand better the potential overall impact of pangolin farming on wild populations there is a need for further research on these uncertainties. The framework used has utility in analysing the potential impact of wildlife farming but there remains a need for a more robust approach to evaluate potential impacts of supply-side interventions.
D.W.S. Challender, M. ‘t Sas-Rolfes, et al. (2019) Evaluating the feasibility of pangolin farming and its potential conservation impact. Global Ecology and Conservation. Vol.20. https://doi.org/10.1016/j.gecco.2019.e00714.
Published: Aug 2019 | Categories: Research Articles


Location Privacy in Conservation (Open Access)
The growing public nature of academic journals along with current best practices of sharing primary data for scientific research are profoundly valuable for the understanding of a species and their conservation efforts. On the other hand, public spatial data on endangered species may be easily abused by wildlife criminals. In this paper, we discuss how geo-indistinguishability, a formal notion of privacy for location-based systems, can be used to add noise to published spatial data whilst allowing quantification of such tradeoff.
Imanda, H., & Wright, J. 2019. Location Privacy in Conservation. arXiv e-prints, arXiv:1907.07054
Published: Jul 2019 | Categories: Research Articles


Illegal wildlife trade and the persistence of “plant blindness” (Open Access)
This review investigates the ways in which “plant blindness,” first described by Wandersee and Schussler (1999, p. 82) as “the misguided anthropocentric ranking of plants as inferior to animals,” intersects with the contemporary boom in research and policy on illegal wildlife trade (IWT). We argue that plants have been largely ignored within this emerging conservation arena, with serious and detrimental effects for biodiversity conservation. With the exception of the illegal trade in timber, we show that plants are absent from much emerging scholarship, and receive scant attention by US and UK funding agencies often driving global efforts to address illegal wildlife trade, despite the high levels of threat many plants face. Our article concludes by discussing current challenges posed by plant blindness in IWT policy and research, but also suggests reasons for cautious optimism in addressing this critical issue for plant conservation.
Margulies, JD, Bullough, L‐A, Hinsley, A, et al. Illegal wildlife trade and the persistence of “plant blindness”. Plants, People, Planet. 2019; 00: 1– 10. https://doi.org/10.1002/ppp3.10053
Published: Jul 2019 | Categories: Research Articles


Evidence to action: research to address illegal wildlife trade
The Oxford Martin Programme on the Illegal Wildlife Trade (illegalwildlifetrade.net) has launched a key research brief, Evidence to Action: Research to Address Illegal Wildlife Trade. This brief, addressed to policy makers and practitioners, outlines areas where research evidence can support effective illegal wildlife trade policy, highlights critical uncertainties where research is required, and emphasizes the need for better design and evaluation of interventions that can help improve the effectiveness of efforts to combat illegal wildlife trade. The Evidence to Action brief is the first of a new set of tools and guidance for researchers and practitioners.
Cugniere, L., Wright, J., & Milner-Gulland, E. (2019). Evidence to action: Research to address illegal wildlife trade. Oryx, 53(3), 411-411. doi:10.1017/S0030605319000371
Published: Jul 2019 | Categories: Research Articles


Born captive: A survey of the lion breeding, keeping and hunting industries in South Africa (Open Access)
Commercial captive breeding and trade in body parts of threatened wild carnivores is an issue of significant concern to conservation scientists and policy-makers. Following a 2016 decision by Parties to the Convention on International Trade in Endangered Species of Wild Fauna and Flora, South Africa must establish an annual export quota for lion skeletons from captive sources, such that threats to wild lions are mitigated. As input to the quota-setting process, South Africa’s Scientific Authority initiated interdisciplinary collaborative research on the captive lion industry and its potential links to wild lion conservation. A National Captive Lion Survey was conducted as one of the inputs to this research; the survey was launched in August 2017 and completed in May 2018. The structured semi-quantitative questionnaire elicited 117 usable responses, representing a substantial proportion of the industry. The survey results clearly illustrate the impact of a USA suspension on trophy imports from captive-bred South African lions, which affected 82% of respondents and economically destabilised the industry. Respondents are adapting in various ways, with many euthanizing lions and becoming increasingly reliant on income from skeleton export sales. With rising consumer demand for lion body parts, notably skulls, the export quota presents a further challenge to the industry, regulators and conservationists alike, with 52% of respondents indicating they would adapt by seeking ‘alternative markets’ for lion bones if the export quota allocation restricted their business. Recognizing that trade policy toward large carnivores represents a ‘wicked problem’, we anticipate that these results will inform future deliberations, which must nonetheless also be informed by challenging inclusive engagements with all relevant stakeholders.
Williams VL, ‘t Sas-Rolfes MJ (2019) Born captive: A survey of the lion breeding, keeping and hunting industries in South Africa. PLoS ONE 14(5): e0217409. https://doi.org/10.1371/journal.pone.0217409
Published: May 2019 | Categories: Research Articles


Estimating identification uncertainties in CITES ‘look-alike’ species (Open Access)
Achieving sustainability in international wildlife trade encompasses a series of challenges, such as identification uncertainty for taxonomically complex groups. Although CITES has developed a ‘look-alike’ policy to collectively manage trade in morphologically similar species and thus facilitate enforcement, its effective application with regards to the export quota system is questionable. We used a multidisciplinary approach to provide an understating of the trade in a taxonomically complex genus of Malagasy chameleons. An online systematic survey of trade was undertaken to identify which species of Calumma have been the subject of trade. A matching task was employed to calculate identification error rates among species in the genus. Results suggest that the online market for Calumma is thriving, including species with long-standing zero quotas. Identification error rates varied widely, reaching high levels of error for some species pairs here identified as ‘look-alike’ species. Findings suggest manual identification technique has varying reliability, potentially resulting in misidentification by stakeholders within the trade. Such errors have negative consequences for both chameleon conservation and the long-term socio-economic development of Madagascar. An understanding of the patterns of identification error can help tailor future management and policy plans.
Alfino, S. and Roberts, D. L. 2019. Estimating identification uncertainties in CITES ‘look-alike’ species (In press). Global Ecology and Conservation. https://doi.org/10.1016/j.gecco.2019.e00648
Published: May 2019 | Categories: Research Articles


Inadequacies in establishing CITES trade bans
Challender, D., Hinsley, A., Milner-Gulland, E.J. (2019) Inadequacies in establishing CITES trade bans. Front Ecol Environ 17( 4): 199– 200, doi:10.1002/fee.2034
Published: Apr 2019 | Categories: Research Articles


Characterizing efforts to reduce consumer demand for wildlife products
The unsustainable trade in wildlife is a key threat to Earth's biodiversity. Efforts to mitigate this threat have traditionally focused on regulation and enforcement, and there is a growing interest in campaigns to reduce consumer demand for wildlife products. We aimed to characterize these behavior‐change campaigns and the evidence of their impacts. We searched peer‐reviewed and grey literature repositories and over 200 institutional websites to retrieve information on demand‐reduction campaigns. We found 236 campaigns, mainly in the grey literature. Since the 1970s, the number of campaigns increased, although for over 15% a start date could not be found. Asia was the primary focus, although at the national level the United States was where most campaigns took place. Campaigns most often focused on a single species of mammal; other vertebrates groups, with the exception of sharks, received limited attention. Many campaigns focused on broad themes, such as the wildlife trade in general or seafood. Thirty‐seven percent of campaigns reported some information on their inputs, 98% on strategies, 70% on outputs, 37% on outcomes (i.e., changes in the target audience), and 9% on impacts (i.e., biological changes or threat reduction). Information on outcomes and impacts was largely anecdotal or based on research designs that are at a high risk of bias, such as pre‐ and postcampaign comparisons. It was unclear whether demand‐reduction campaigns had direct behavioral or biological impacts. The lack of robust impact evaluation made it difficult to draw insights to inform future efforts, a crucial part of effectively addressing complex issues, such as the wildlife trade. If demand‐reduction campaigns are to become a cornerstone of the efforts to mitigate the unsustainable trade in wildlife, conservationists need to adopt more rigorous impact evaluation and a more collaborative approach that fosters the sharing of data and insights.
Veríssimo, D. and Wan, A. K. 2019. Characterizing efforts to reduce consumer demand for wildlife products. Conservation Biology. doi:10.1111/cobi.13227
Published: Apr 2019 | Categories: Research Articles


Emerging illegal wildlife trade issues in 2018: a global horizon scan (Pre-print)
Illegal wildlife trade is gaining prominence as a global threat to biodiversity, but remains inadequately researched and poorly understood. To help inform proactive policy responses in the face of uncertainty, we conducted a horizon scan of significant emerging issues. We built upon existing iterative horizon scanning methods, using an open and global participatory approach to evaluate issues from a diverse range of sources. Prioritised issues related to: developments in biological, information and financial technologies; changing trends in demand and information; and socio-economical and geopolitical shifts and influences (with a particular focus on East Asia, Africa and Latin America). The top three issues related to China, illustrating its vital role in tackling emerging threats. This analysis can support national governments, international bodies, researchers and non-governmental organisations as they develop strategies for addressing the illegal wildlife trade.
Esmail, N., Wintle, B., Rolfe, M. '. S., Athanas, A., Beale, C., Bending, Z., … Milner-Gulland, E. (2019). Emerging illegal wildlife trade issues in 2018: a global horizon scan. https://doi.org/10.31235/osf.io/b5azx
Published: Apr 2019 | Categories: Research Articles


Network analysis of a stakeholder community combatting illegal wildlife trade
The illegal wildlife trade has emerged as a growing and urgent environmental issue. Stakeholders involved in the efforts to curb wildlife trafficking include non‐governmental organizations (NGOs), academia, and state government/enforcement bodies. The extent to which these stakeholders work and communicate amongst each other is fundamental to effectively combatting illicit trade. Using the United Kingdom as a case study, we conducted a mixed methods study using a social network analysis and stakeholder interviews to assess communication relationships in the counter wildlife trafficking community. NGOs consistently occupied 4 of the 5 most central positions in the generated networks, while academic institutions were routinely the converse, filling 4 of the 5 most peripheral positions. However, NGOs were also shown to be the least diverse in their communication practices, compared to the other stakeholder groups. Through semi‐structured interviews, personal relationships were identified as the biggest key to functioning communication. Participant insights also showed that stakeholder‐specific variables (e.g. ethical/confidentiality concerns), and competition and fundraising, can have a confounding effect on inter‐communication. Evaluating communication networks and intra‐stakeholder communication trends is essential to facilitate a more cohesive, productive, and efficient response to the challenges of combatting illegal wildlife trade.
Moshier, A., Steadman, J., Roberts, D. L. 2019. Network analysis of a stakeholder community combatting illegal wildlife trade (In press). Conservation Biology. https://doi.org/10.1111/cobi.13336
Published: Apr 2019 | Categories: Research Articles


Criteria for CITES species protection
Unsustainable international wildlife trade is a major conservation concern, and the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) is a key tool for regulating it. In their Policy Forum “Long delays in banning trade in threatened species” (15 February, p. 686), E. G. Frank and D. S. Wilcove suggest that when the International Union for Conservation of Nature (IUCN) Red List of Threatened Species identifies a species as threatened, at least in part by international trade, it should be promptly added to CITES. We welcome the suggestion for closer interaction between the Red List and amendments to the CITES Appendices. However, the proposed approach of a near-automatic pathway overlooks the independent criteria and processes used for evaluating extinction risk on the Red List and for including species in CITES.
Challender, D. W. S., Hoffmann, M., Hoffmann, R., Scott, J., Robinson, J. E., Cremona, P., Hilton-Taylor, C., Jenkins, R. K. B., Malsch, K., Conde, D., De Meulenaer, T. 2019. Criteria for CITES species protection. SCIENCE Vol. 364(6437), 247-248.
Published: Apr 2019 | Categories: Research Articles


Understanding complex drivers of wildlife crime to design effective conservation interventions
In conservation, understanding the drivers of behavior and developing robust interventions to promote behavioral change is challenging and requires a multi‐faceted approach. This is particularly true for efforts to address illegal wildlife use, where pervasive ‐ and sometimes simplistic ‐ narratives often obscure complex realities. In this paper, we apply a set of novel techniques in an integrated approach to investigate the drivers and prevalence of wildlife crime in communities surrounding two national parks in Uganda and predict the performance of potential interventions designed to tackle these crimes. Although poverty is often assumed to be a key driver of wildlife crime, we show that better off households, as well as those that suffer from human wildlife conflict and those that do not receive any benefits from the parks’ tourism revenue‐sharing, are more likely to be involved in certain types of wildlife crime, especially illegal hunting. The interventions predicted to have the greatest impact on reducing local participation in wildlife crime are those that aim to directly address the drivers including, mitigating damage caused by wildlife and generating financial benefits for park‐adjacent households. This study demonstrates the power of a triangulated approach in gaining insights into complex and hard‐to‐access behaviors, and highlights the importance of going beyond single‐driver narratives.
Travers H., Archer L. J., Mwedde, G., Roe, D., Baker J., Plumptre A., Rwetsiba A., Milner‐Gulland E.J. 2019. Understanding complex drivers of wildlife crime to design effective conservation interventions. Conservation Biology.
Published: Apr 2019 | Categories: Research Articles


The Past, Present, and Future of Using Social Marketing to Conserve Biodiversity (Open Access)
Since the establishment of social marketing as a discipline, it was clear that environmental sustainability would be part of its scope (Kotler & Zaltman, 1971). Yet, whereas the academic scope of the field was broadly defined, the origins of social marketing practice, which were heavily linked to the promotion of family planning, meant that the development of this practice-led field has been historically focused on public health. Since the beginning of the century, there have been important developments at the intersection of social marketing and environmental sustainability, particularly considering issues such as waste management, energy efficiency, or water conservation. One area that has had very limited attention in the social marketing literature has been biodiversity conservation, defined as the management of diversity of life on Earth with the aim of protecting species, ecosystems, and their interactions from excessive rates of extinction (Hunter & Gibbs, 2007). While this has often been constructed to be a topic that relates to wildlife as opposed to people, it is clear that all key threats to biodiversity are a result of human behavior and as such successful conservation strategies have to also be able to influence human decision-making (Schultz, 2011). It is thus unsurprising that conservationists are increasingly interested in social marketing (Veríssimo, 2013), and this issue of Social Marketing Quarterly aims to bring together these two fields to cross pollinate ideas and promote social marketing research in biodiversity conservation.
Diogo Veríssimo. 2019. The Past, Present, and Future of Using Social Marketing to Conserve Biodiversity. Social Marketing Quarterly, Vol 25(1):3-8.
Published: Apr 2019 | Categories: Research Articles


Identifying global centers of unsustainable commercial harvesting of species
Overexploitation is one of the main threats to biodiversity, but the intensity of this threat varies geographically. We identified global concentrations, on land and at sea, of 4543 species threatened by unsustainable commercial harvesting. Regions under high-intensity threat (based on accessibility on land and on fishing catch at sea) cover 4.3% of the land and 6.1% of the seas and contain 82% of all species threatened by unsustainable harvesting and >80% of the ranges of Critically Endangered species threatened by unsustainable harvesting. Currently, only 16% of these regions are covered by protected areas on land and just 6% at sea. Urgent actions are needed in these centers of unsustainable harvesting to ensure that use of species is sustainable and to prevent further species’ extinctions.
Di Minin, et. al. 2019. Identifying global centers of unsustainable commercial harvesting of species. Science Advances Vol. 5, no. 4.
Published: Apr 2019 | Categories: Research Articles


Characterising trafficking and trade of pangolins in the Gulf of Guinea (Open Access)
Humans and pangolins have a long and intertwined history in Africa and Asia, with the species having been used for subsistence, livelihood, medicinal, and cultural purposes. Populations of Asian pangolins have severely declined, and intercontinental trafficking of African pangolin scales to Asia has emerged in the last decade. Coastal countries in the Gulf of Guinea have been highlighted as hotspots of illegal pangolin trade, and in 2017, international commercial trade in pangolins was banned. We characterise the trade and international trafficking of African pangolins in the coastal countries around the Gulf of Guinea using data across three tiers. First, we investigated which countries were most heavily involved in international trafficking using seizure data. Second, we investigated where domestic seizures of pangolins took place, and whether they were seized with other species. Finally, we tracked the open sale of pangolins across 20-years at the main wild meat market in Malabo, Equatorial Guinea, to investigate patterns of pangolin sales in a capital city. We found a total of 55893 kg of pangolin scales in 33 seizures between 2012 and 2018, with Cameroon and Nigeria being the most common export countries for international trafficking of pangolin scales. Cameroon had the largest number of domestic seizures (45); we also observed a shift from seizures of meat to scales from 2013 onwards. At the Malabo market a total of 11207 Phataginus pangolins and 366 Smutsia pangolins were sold between 1997 and 2017, and the number and price of pangolins increased over time for both genera and corresponded to a shift in the import of pangolins from Cameroon. Together, these results highlight the scale of trade and trafficking in pangolins within and from this region.
Ingram, et al. 2019. Characterising trafficking and trade of pangolins in the Gulf of Guinea. Global Ecology and Conservation. Volume 17.
Published: Mar 2019 | Categories: Research Articles


Evaluating methods for detecting and monitoring pangolin (Pholidata: Manidae) populations (Open Access)
The behaviours, ecologies and morphologies of pangolins make them challenging to survey and monitor, and non-targeted wildlife surveys have not produced robust status assessments, especially where population densities are low because of overexploitation. To inform the development of feasible survey and monitoring techniques for pangolins, we conducted a systematic review of all traceable efforts used to survey and monitor pangolins to date: 87 articles were included in the review. Pitfalls of current approaches are discussed and recommendations made on suitable methods. Recommendations include the use of mark-recapture for burrow-dwelling species, community interviews, sign-based surveys in arid and open habitats, detection dog teams, and targeted camera-trapping. Occupancy sampling using camera-traps could be used to monitor some pangolin populations, particularly ground-dwelling species, but the rarity of all species makes it uncertain whether this would provide enough data for monitoring; combinations of methods used within an occupancy sampling framework are likely to be the most effective. There will be many circumstances where direct monitoring of a population at a site, to a level that will generate precise data, is not financially viable nor the best use of conservation resources. In many sites, particularly in Asia, pangolins are too rare as a result of overexploitation, and/or occur in inaccessible areas where significant resources will be needed to implement a targeted monitoring programme. Under such circumstances, the use of proxy variables, including status of other hunting-sensitive species that are easier to record, in combination with enforcement or patrol data and/or community interviews, is likely to be the most cost-effective method for assessing the impact of conservation interventions on pangolin status. The publication of incidental observations and survey ‘by-catch’ would significantly improve understanding of pangolin status and ecology, and therefore how best to identify, conserve and monitor priority populations.
Willcox, et. al. 2019. Evaluating methods for detecting and monitoring pangolin (Pholidata: Manidae) populations. Global Ecology and Conservation, Volume 17.
Published: Feb 2019 | Categories: Research Articles


A Horizon Scan of Emerging Issues for Global Conservation in 2019
We present the results of our tenth annual horizon scan. We identified 15 emerging priority topics that may have major positive or negative effects on the future conservation of global biodiversity, but currently have low awareness within the conservation community. We hope to increase research and policy attention on these areas, improving the capacity of the community to mitigate impacts of potentially negative issues, and maximise the benefits of issues that provide opportunities. Topics include advances in crop breeding, which may affect insects and land use; manipulations of natural water flows and weather systems on the Tibetan Plateau; release of carbon and mercury from melting polar ice and thawing permafrost; new funding schemes and regulations; and land-use changes across Indo-Malaysia.
Sutherland, W. et al. 2019. A Horizon Scan of Emerging Issues for Global Conservation in 2019. Trends in Ecology & Evolution Vol. 34 (1): 83-94.
Published: Jan 2019 | Categories: Research Articles


To What Extent Is Social Marketing Used in Demand Reduction Campaigns for Illegal Wildlife
The illegal wildlife trade is a global threat to biodiversity as well as to public health and good governance. As legislation and law enforcement have been insufficient to protect many wildlife species, conservationists are increasingly focused on campaigns to help reduce demand for wildlife products. Social marketing is increasingly being used to support biodiversity conservation efforts, but the extent of its use has seldom been researched. Based on interviews with conservation practitioners, we assess the extent to which social marketing has been used in demand reduction campaign design. We do this by investigating the level to which demand reduction campaigns met the benchmarks defined by the UK’s National Social Marketing Centre. We focus on rhino horn and elephant ivory, two high-profile products in the illegal wildlife trade and in China and Vietnam given their role as key consumer countries. We also investigate how conservation practitioners view the opportunities and challenges of using social marketing in the context of reducing demand for illegally traded wildlife products. Our findings highlight that there are substantial gaps between best practice in social marketing and current practices in the design of demand reduction campaigns. However, several elements of social marketing are widely utilized and a platform exists from which to build more comprehensive behavioral influence campaigns in future. In terms of future needs, practitioners highlighted the need for independent consumer research upon which to build target audience insights, a focus on broader audience segments beyond the product consumers, and the improvement of collaborations across institutions.
Greenfield, S., & Veríssimo, D. (2018). To What Extent Is Social Marketing Used in Demand Reduction Campaigns for Illegal Wildlife Products? Insights From Elephant Ivory and Rhino Horn. Social Marketing Quarterly. https://doi.org/10.1177/1524500418813543
Published: Nov 2018 | Categories: Research Articles


To What Extent Is Social Marketing Used in Demand Reduction Campaigns for Illegal Wildlife Products? Insights From Elephant Ivory and Rhino Horn
The illegal wildlife trade is a global threat to biodiversity as well as to public health and good governance. As legislation and law enforcement have been insufficient to protect many wildlife species, conservationists are increasingly focused on campaigns to help reduce demand for wildlife products. Social marketing is increasingly being used to support biodiversity conservation efforts, but the extent of its use has seldom been researched. Based on interviews with conservation practitioners, we assess the extent to which social marketing has been used in demand reduction campaign design. We do this by investigating the level to which demand reduction campaigns met the benchmarks defined by the UK’s National Social Marketing Centre. We focus on rhino horn and elephant ivory, two high-profile products in the illegal wildlife trade and in China and Vietnam given their role as key consumer countries. We also investigate how conservation practitioners view the opportunities and challenges of using social marketing in the context of reducing demand for illegally traded wildlife products. Our findings highlight that there are substantial gaps between best practice in social marketing and current practices in the design of demand reduction campaigns. However, several elements of social marketing are widely utilized and a platform exists from which to build more comprehensive behavioral influence campaigns in future. In terms of future needs, practitioners highlighted the need for independent consumer research upon which to build target audience insights, a focus on broader audience segments beyond the product consumers, and the improvement of collaborations across institutions.
Greenfield S.J. & Veríssimo D. (2019). To what extent is social marketing used in demand reduction campaigns for illegal wildlife products? Social Marketing Quarterly, Vol 25 (1), 2019. https://doi.org/10.1177/1524500418813543
Published: Nov 2018 | Categories: Research Articles


Documenting and tackling the illegal wildlife trade: change and continuity over 40 years
In October 2018 the UK government hosts a major international governmental conference on tackling the illegal wildlife trade, the latest in a series that it initiated in 2014 with a conference attended by representatives of 50 countries (UK Government, 2014).This emphasis on illegal wildlife trade as a priority conservation issue is very welcome. The trade is not, however, a new problem. Looking back to past experiences and attempts to address such trade can provide valuable insights for current policy and practice. To mark and contribute to the deliberations of the October 2018 London conference we have compiled 16 of these articles into a virtual issue (https://www.cambridge.org/core/journals/oryx/virtual-issues), illustrating both the persistent and changing themes in illegal wildlife trade research as represented in Oryx from the 1960s to the present day.
Milner-Gulland, E. (2018). Documenting and tackling the illegal wildlife trade: Change and continuity over 40 years. Oryx, 52(4), 597-598. doi:10.1017/S0030605318001047
Published: Sep 2018 | Categories: Research Articles


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