Published on in Vol 20, No 3 (2018): March
1 Bristol Veterinary School, University of Bristol, Bristol, United Kingdom
2 Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
3 King's Center for Global Health and Health Partnerships, King's College London, London, United Kingdom
4 School of Population Health & Environmental Sciences, King's College London, London, United Kingdom
5 School of Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
6 SH:24, London, United Kingdom
7 Department of Sexual Health and HIV, Kings College Hospital NHS Foundation Trust, London, United Kingdom
8 Department of Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom
9 King's Center for Global Health and Health Partnerships, School of Population Health & Environmental Sciences, King's College London, London, United Kingdom