1
|
Tensen L, Jansen van Vuuren B, Groom R, Bertola LD, de Iongh H, Rasmussen G, Du Plessis C, Davies-Mostert H, van der Merwe D, Fabiano E, Lages F, Rocha F, Monterroso P, Godinho R. Spatial genetic patterns in African wild dogs reveal signs of effective dispersal across southern Africa. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.992389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Across much of Africa, decades of civil war, land reforms, and persecution by humans have decimated wildlife populations. African wild dogs (Lycaon pictus) have declined dramatically during the past decades, but have shown recent natural recolonisation of some areas. In Angola, they were rediscovered after almost five decades when no surveys were being conducted, and they have recolonised areas in southern Zimbabwe and northern South Africa. Wild dogs were also reintroduced to Mozambique, where only few individuals remained. Against this backdrop, understanding genetic structure and effective dispersal between fragmented populations is essential to ensure the best conservation approaches for the long-term survival of the species. Our study investigated population genetic diversity, differentiation and gene flow of wild dogs across southern Africa, to include areas where they have recently been rediscovered, reestablished or reintroduced. Our results point to four weakly differentiated genetic clusters, representing the lowveld of Zimbabwe/Limpopo, Kruger NP, Angola/KAZA-TFCA, and the managed metapopulation, counterbalanced by moderate levels of effective dispersal on a southern African scale. Our results suggest that if the human footprint and impact can be significantly minimized, natural dispersal of wild dogs could lead to the demographic recovery of the species in southern Africa.
Collapse
|
2
|
Becker MS, Almeida J, Begg C, Bertola L, Breitenmoser C, Breitenmoser U, Coals P, Funston P, Gaylard A, Groom R, Henschel P, Ikanda D, Jorge A, Kruger J, Lindsey P, Maimbo H, Mandisodza-Chikerema R, Maude G, Mbizah M, Miller SM, Mudongo E, Mwape H, Mweetwa T, Naude V, Nyirenda VR, Parker A, Parker D, Reid C, Robson A, Sayer E, Selier SAJ, Sichande M, Simukonda C, Uiseb K, Williams VL, Zimba D, Hunter L. Guidelines for evaluating the conservation value of African lion (Panthera leo) translocations. Front Conserv Sci 2022. [DOI: 10.3389/fcosc.2022.963961] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
As the top predator in African ecosystems, lions have lost more than 90% of their historical range, and few countries possess strong evidence for stable populations. Translocations (broadly defined here as the capture and movement of lions for various management purposes) have become an increasingly popular action for this species, but the wide array of lion translocation rationales and subsequent conservation challenges stemming from poorly conceived or unsuitable translocations warrants additional standardized evaluation and guidance. At their best, translocations fill a key role in comprehensive strategies aimed at addressing the threats facing lions and fostering the recovery of wild populations in their historic range. At their worst, translocations can distract from addressing the major threats to wild populations and habitats, divert scarce funding from more valuable conservation actions, exacerbate conflict with humans in recipient sites, disrupt local lion demography, and undermine the genetic integrity of wild lion populations in both source and recipient sites. In the interest of developing best practice guidelines for deciding when and how to conduct lion translocations, we discuss factors to consider when determining whether a translocation is of conservation value, introduce a value assessment for translocations, and provide a decision matrix to assist practitioners in improving the positive and reducing the negative outcomes of lion translocation.
Collapse
|
3
|
Rabaiotti D, Groom R, McNutt JW, Watermeyer J, O'Neill HMK, Woodroffe R. High temperatures and human pressures interact to influence mortality in an African carnivore. Ecol Evol 2021; 11:8495-8506. [PMID: 34257912 PMCID: PMC8258213 DOI: 10.1002/ece3.7601] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 03/12/2021] [Accepted: 03/26/2021] [Indexed: 12/05/2022] Open
Abstract
The impacts of high ambient temperatures on mortality in humans and domestic animals are well-understood. However much less is known about how hot weather affects mortality in wild animals. High ambient temperatures have been associated with African wild dog Lycaon pictus pup mortality, suggesting that high temperatures might also be linked to high adult mortality.We analyzed mortality patterns in African wild dogs radio-collared in Kenya (0°N), Botswana (20°S), and Zimbabwe (20°S), to examine whether ambient temperature was associated with adult mortality.We found that high ambient temperatures were associated with increased adult wild dog mortality at the Kenya site, and there was some evidence for temperature associations with mortality at the Botswana and Zimbabwe sites.At the Kenya study site, which had the highest human impact, high ambient temperatures were associated with increased risks of wild dogs being killed by people, and by domestic dog diseases. In contrast, temperature was not associated with the risk of snare-related mortality at the Zimbabwe site, which had the second-highest human impact. Causes of death varied markedly between sites.Pack size was positively associated with survival at all three sites.These findings suggest that while climate change may not lead to new causes of mortality, rising temperatures may exacerbate existing anthropogenic threats to this endangered species, with implications for conservation. This evidence suggests that temperature-related mortality, including interactions between temperature and other anthropogenic threats, should be investigated in a greater number of species to understand and mitigate likely impacts of climate change. .
Collapse
Affiliation(s)
- Daniella Rabaiotti
- Institute of ZoologyZoological Society of LondonLondonUK
- Division of BiosciencesDepartment of Genetics, Evolution and EnvironmentCentre for Biodiversity and Environment ResearchUniversity College LondonLondonUK
| | - Rosemary Groom
- Institute of ZoologyZoological Society of LondonLondonUK
- African Wildlife Conservation FundChishakwe RanchZimbabwe
| | | | | | - Helen M. K. O'Neill
- Durrell Institute of Conservation and EcologySchool of Anthropology and ConservationUniversity of KentKentUK
| | - Rosie Woodroffe
- Institute of ZoologyZoological Society of LondonLondonUK
- Division of BiosciencesDepartment of Genetics, Evolution and EnvironmentCentre for Biodiversity and Environment ResearchUniversity College LondonLondonUK
| |
Collapse
|
4
|
Tol SJ, Harrison M, Groom R, Gilbert J, Blair D, Coles R, Congdon BC. Using DNA to distinguish between faeces of Dugong dugon and Chelonia mydas: non-invasive sampling for IUCN-listed marine megafauna. CONSERV GENET RESOUR 2021. [DOI: 10.1007/s12686-020-01187-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
5
|
Durant SM, Groom R, Kuloba B, Samna A, Muzuma U, Gadimang P, Mandisodza-Chikerema R, Ipavec A, Mitchell N, Ikanda D, Msuha M. Bridging the divide between scientists and decision-makers: how behavioural ecologists can increase the conservation impact of their research? Philos Trans R Soc Lond B Biol Sci 2019; 374:20190011. [PMID: 31352894 DOI: 10.1098/rstb.2019.0011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Effective conservation management is underpinned by science. Yet, there are often barriers against the incorporation of up-to-date scientific research into decision-making and policy. Here, we draw on experience from a multi-nation approach to conserve cheetah and African wild dogs across Africa, using relationships between scientists and managers established over more than a decade, to better understand scientific information needs of managers. While our analysis focuses on Africa, many of our findings are likely to be relevant to other regions. Managers view science as critical to their decision-making processes and strongly support scientific research, particularly when research directly addresses their information needs. However, managers reported problems in accessing final results and highlighted the need to access raw ecological data from research undertaken within protected areas. Fundamental to improving the management relevance of scientific research is the need for scientists to engage with managers through all steps of the research process, from project design and implementation through to scientific publication and end-of-project agreements. Effective engagement requires open and clear communication; including agreed processes for access to biodiversity data and submission of final results. In order to foster future scientific endeavours and collaborations, systems should be established to better facilitate information exchange, while also safeguarding the rights of scientists to publish their data and protect their academic freedom. Our analysis also calls for a greater awareness of the geo-political context under which science is undertaken, and for increased scientific participation through an inclusive approach that recognizes, and gives credit to, a wider diversity of scientific contributions and expertise. This article is part of the theme issue 'Linking behaviour to dynamics of populations and communities: application of novel approaches in behavioural ecology to conservation'.
Collapse
Affiliation(s)
- Sarah M Durant
- Institute of Zoology, Zoological Society of London, London, UK.,Wildlife Conservation Society, New York, NY, USA
| | - Rosemary Groom
- Institute of Zoology, Zoological Society of London, London, UK
| | | | | | | | - Phemelo Gadimang
- Republic of Botswana Department of Wildlife and National Parks, 439808 Gaborone, Botswana
| | | | - Audrey Ipavec
- Institute of Zoology, Zoological Society of London, London, UK
| | | | - Dennis Ikanda
- Tanzania Wildlife Research Institute, Arusha, United Republic of Tanzania
| | - Maurus Msuha
- Wildlife Division, Ministry of Natural Resources and Tourism, 119143 Dar es Salaam, Arusha, United Republic of Tanzania
| |
Collapse
|
6
|
Affiliation(s)
- J. W. McNutt
- Botswana Predator Conservation Trust Maun Botswana
| | - R. Groom
- Institute of Zoology London UK
- African Wildlife Conservation Fund Birchenough Bridge Zimbabwe
| | | |
Collapse
|
7
|
Woodroffe R, Groom R, McNutt JW. Hot dogs: High ambient temperatures impact reproductive success in a tropical carnivore. J Anim Ecol 2017; 86:1329-1338. [DOI: 10.1111/1365-2656.12719] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 03/29/2017] [Indexed: 11/30/2022]
Affiliation(s)
| | - Rosemary Groom
- Institute of Zoology Zoological Society of London London UK
- Department of Zoology University of Johannesburg Auckland Park South Africa
- African Wildlife Conservation Fund Chishakwe Ranch Zimbabwe
| | | |
Collapse
|
8
|
Durant SM, Mitchell N, Groom R, Pettorelli N, Ipavec A, Jacobson AP, Woodroffe R, Böhm M, Hunter LTB, Becker MS, Broekhuis F, Bashir S, Andresen L, Aschenborn O, Beddiaf M, Belbachir F, Belbachir-Bazi A, Berbash A, Brandao de Matos Machado I, Breitenmoser C, Chege M, Cilliers D, Davies-Mostert H, Dickman AJ, Ezekiel F, Farhadinia MS, Funston P, Henschel P, Horgan J, de Iongh HH, Jowkar H, Klein R, Lindsey PA, Marker L, Marnewick K, Melzheimer J, Merkle J, M'soka J, Msuha M, O'Neill H, Parker M, Purchase G, Sahailou S, Saidu Y, Samna A, Schmidt-Küntzel A, Selebatso E, Sogbohossou EA, Soultan A, Stone E, van der Meer E, van Vuuren R, Wykstra M, Young-Overton K. The global decline of cheetah Acinonyx jubatus and what it means for conservation. Proc Natl Acad Sci U S A 2017; 114:528-533. [PMID: 28028225 PMCID: PMC5255576 DOI: 10.1073/pnas.1611122114] [Citation(s) in RCA: 131] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Establishing and maintaining protected areas (PAs) are key tools for biodiversity conservation. However, this approach is insufficient for many species, particularly those that are wide-ranging and sparse. The cheetah Acinonyx jubatus exemplifies such a species and faces extreme challenges to its survival. Here, we show that the global population is estimated at ∼7,100 individuals and confined to 9% of its historical distributional range. However, the majority of current range (77%) occurs outside of PAs, where the species faces multiple threats. Scenario modeling shows that, where growth rates are suppressed outside PAs, extinction rates increase rapidly as the proportion of population protected declines. Sensitivity analysis shows that growth rates within PAs have to be high if they are to compensate for declines outside. Susceptibility of cheetah to rapid decline is evidenced by recent rapid contraction in range, supporting an uplisting of the International Union for the Conservation of Nature (IUCN) Red List threat assessment to endangered. Our results are applicable to other protection-reliant species, which may be subject to systematic underestimation of threat when there is insufficient information outside PAs. Ultimately, conserving many of these species necessitates a paradigm shift in conservation toward a holistic approach that incentivizes protection and promotes sustainable human-wildlife coexistence across large multiple-use landscapes.
Collapse
Affiliation(s)
- Sarah M Durant
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom;
- Wildlife Conservation Society, New York, NY 10460
- Department of Genetics, Evolution and Environment, University College London, London WC1E 6BT, United Kingdom
| | - Nicholas Mitchell
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom
- Wildlife Conservation Society, New York, NY 10460
| | - Rosemary Groom
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom
- Wildlife Conservation Society, New York, NY 10460
| | - Nathalie Pettorelli
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom
- Department of Genetics, Evolution and Environment, University College London, London WC1E 6BT, United Kingdom
| | - Audrey Ipavec
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom
- Wildlife Conservation Society, New York, NY 10460
| | - Andrew P Jacobson
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom
- Department of Geography, University College London, London WC1E 6BT, United Kingdom
| | - Rosie Woodroffe
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom
- Department of Genetics, Evolution and Environment, University College London, London WC1E 6BT, United Kingdom
| | - Monika Böhm
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom
- Department of Genetics, Evolution and Environment, University College London, London WC1E 6BT, United Kingdom
| | | | - Matthew S Becker
- Zambian Carnivore Programme, Mfuwe, Zambia
- Conservation Biology and Ecology Program, Department of Ecology, Montana State University, Bozeman, MT 59717
| | - Femke Broekhuis
- Wildlife Conservation Research Unit, Department of Zoology, University of Oxford, Oxford OX13 5QL, United Kingdom
- Mara Cheetah Project, Kenya Wildlife Trust, Kenya
| | - Sultana Bashir
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom
| | - Leah Andresen
- Department of Zoology, Nelson Mandela Metropolitan University, Port Elizabeth 6031, South Africa
| | - Ortwin Aschenborn
- Bwabwata Ecological Institute, Susuwe Park Station, Zambezi Region, Ministry of Environment and Tourism, Namibia
| | - Mohammed Beddiaf
- Office National du Parc Culturel du Tassili N'Ajjer, Djanet, Algeria
| | - Farid Belbachir
- Laboratoire d'Écologie et Environnement, Université de Béjaïa, Béjaïa, Algeria
| | - Amel Belbachir-Bazi
- Laboratoire d'Écologie et Environnement, Université de Béjaïa, Béjaïa, Algeria
| | - Ali Berbash
- Nature Conservation Department, Environment General Authority (EGA), Tripoli, Libya
| | | | - Christine Breitenmoser
- Carnivore Ecology and Wildlife Management (KORA), 3074 Muri, Switzerland
- International Union for the Conservation of Nature/Species Survival Commission Cat Specialist Group, 3074 Muri, Switzerland
| | | | | | | | - Amy J Dickman
- Wildlife Conservation Research Unit, Department of Zoology, University of Oxford, Oxford OX13 5QL, United Kingdom
| | - Fabiano Ezekiel
- Department of Wildlife Management and Ecotourism, University of Namibia, Windhoek, Namibia
| | - Mohammad S Farhadinia
- Wildlife Conservation Research Unit, Department of Zoology, University of Oxford, Oxford OX13 5QL, United Kingdom
| | | | | | - Jane Horgan
- Cheetah Conservation Botswana, Gaborone, Botswana
| | - Hans H de Iongh
- Institute of Environmental Sciences, Leiden University, 2300 RA Leiden, The Netherlands
| | - Houman Jowkar
- Persian Wildlife Heritage Foundation, Tehran 15856-86341, Iran
- Conservation of Asiatic Cheetah Program, Department of Environment, Tehran, Iran
| | | | | | | | | | - Joerg Melzheimer
- Department Evolutionary Ecology, Leibniz Institute for Zoo and Wildlife Research, 10315 Berlin, Germany
| | | | - Jassiel M'soka
- Department of National Parks and Wildlife, Chilanga, Zambia
| | - Maurus Msuha
- Tanzania Wildlife Research Institute, Arusha, Tanzania
| | - Helen O'Neill
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom
- Department of Genetics, Evolution and Environment, University College London, London WC1E 6BT, United Kingdom
| | - Megan Parker
- Working Dogs for Conservation, Bozeman, MT 59771
| | - Gianetta Purchase
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom
| | - Samaila Sahailou
- Direction de la Faune, de la Chasse et des Aires Protégées, Niamey, Niger
| | - Yohanna Saidu
- Nigeria National Park Service, Garki, Abuja, Nigeria
| | - Abdoulkarim Samna
- Direction de la Faune, de la Chasse et des Aires Protégées, Niamey, Niger
| | | | | | | | | | - Emma Stone
- Carnivore Research Malawi, Conservation Research Africa, Lilongwe, Malawi
| | | | | | | | | |
Collapse
|
9
|
Packer C, Loveridge A, Canney S, Caro T, Garnett S, Pfeifer M, Zander K, Swanson A, MacNulty D, Balme G, Bauer H, Begg C, Begg K, Bhalla S, Bissett C, Bodasing T, Brink H, Burger A, Burton A, Clegg B, Dell S, Delsink A, Dickerson T, Dloniak S, Druce D, Frank L, Funston P, Gichohi N, Groom R, Hanekom C, Heath B, Hunter L, DeIongh H, Joubert C, Kasiki S, Kissui B, Knocker W, Leathem B, Lindsey P, Maclennan S, McNutt J, Miller S, Naylor S, Nel P, Ng'weno C, Nicholls K, Ogutu J, Okot-Omoya E, Patterson B, Plumptre A, Salerno J, Skinner K, Slotow R, Sogbohossou E, Stratford K, Winterbach C, Winterbach H, Polasky S. Conserving large carnivores: dollars and fence. Ecol Lett 2013; 16:635-41. [PMID: 23461543 DOI: 10.1111/ele.12091] [Citation(s) in RCA: 153] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 11/19/2012] [Accepted: 01/17/2013] [Indexed: 11/26/2022]
|
10
|
Marsden CD, Woodroffe R, Mills MGL, McNutt JW, Creel S, Groom R, Emmanuel M, Cleaveland S, Kat P, Rasmussen GSA, Ginsberg J, Lines R, André JM, Begg C, Wayne RK, Mable BK. Spatial and temporal patterns of neutral and adaptive genetic variation in the endangered African wild dog (Lycaon pictus). Mol Ecol 2012; 21:1379-93. [PMID: 22320891 DOI: 10.1111/j.1365-294x.2012.05477.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Deciphering patterns of genetic variation within a species is essential for understanding population structure, local adaptation and differences in diversity between populations. Whilst neutrally evolving genetic markers can be used to elucidate demographic processes and genetic structure, they are not subject to selection and therefore are not informative about patterns of adaptive variation. As such, assessments of pertinent adaptive loci, such as the immunity genes of the major histocompatibility complex (MHC), are increasingly being incorporated into genetic studies. In this study, we combined neutral (microsatellite, mtDNA) and adaptive (MHC class II DLA-DRB1 locus) markers to elucidate the factors influencing patterns of genetic variation in the African wild dog (Lycaon pictus); an endangered canid that has suffered extensive declines in distribution and abundance. Our genetic analyses found all extant wild dog populations to be relatively small (N(e) < 30). Furthermore, through coalescent modelling, we detected a genetic signature of a recent and substantial demographic decline, which correlates with human expansion, but contrasts with findings in some other African mammals. We found strong structuring of wild dog populations, indicating the negative influence of extensive habitat fragmentation and loss of gene flow between habitat patches. Across populations, we found that the spatial and temporal structure of microsatellite diversity and MHC diversity were correlated and strongly influenced by demographic stability and population size, indicating the effects of genetic drift in these small populations. Despite this correlation, we detected signatures of selection at the MHC, implying that selection has not been completely overwhelmed by genetic drift.
Collapse
Affiliation(s)
- Clare D Marsden
- Institute of Biodiversity, Animal Health & Comparative Medicine, University of Glasgow, Glasgow, UK.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
11
|
|
12
|
Groom R, Tryzelaar J, Forest R, Niimi K, Cecere G, Donegan D, Katz S, Weldner P, Quinn R, Braxton J, Blank S, Kramer R, Morton J. Intra-operative quality assessment of coronary artery bypass grafts. Perfusion 2001; 16:511-8. [PMID: 11761091 DOI: 10.1177/026765910101600611] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Early coronary artery bypass graft (CABG) failure is a troubling complication that may result in a wide range of problems, including refractory angina, myocardial infarction, low cardiac output, arrhythmia, and fatal heart failure. Early graft failures are related to poor quality and size of the distal native vascular bed, coagulation abnormalities, or technical problems involving the graft conduits and anastomoses. Unfortunately, graft failure is difficult to detect during surgery by visual assessment, palpation, or conventional monitoring. We evaluated the accuracy and utility of a transit-time, ultrasonic flow measurement system for measurement of CABGs. There were no differences between transit-time measurements and volumetric-time collected samples in an in vitro circuit over a range of flows from 10 to 100ml/min (Bland and Altman Plot, 1.96 SD). Two hundred and ninety-eight CABGs were examined in 125 patients. Graft flow rate was proportional to the target vessel diameter. Nine technical errors were detected and corrected. Flow waveform morphology provided valuable information related to the quality of the anastamosis, which led to the immediate correction of technical problems at the time of surgery.
Collapse
Affiliation(s)
- R Groom
- Cardiac Surgery Department, Maine Medical Center, Portland 04102, USA.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Affiliation(s)
- R Groom
- Geriatric Department, St. George's Hospital Medical School, London, UK
| |
Collapse
|