1. Kenya AIDS NGOs Consortium, Nairobi, Kenya
2. School of Population Health and Environmental Sciences, King’s College London, London, UK
3. School of Medicine, University of Nairobi, Nairobi, Kenya
4. Kenya & African Population and Health Research Center, Nairobi, Kenya
5. Department of Medicine, University of California San Diego, San Diego, California, USA
6. Centre for Research on Drugs and Health Behaviour, London School of Hygiene and Tropical Medicine, London, UK
7. University of New South Wales, Syndey, Australia