1. Department of Sociomedical Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
2. Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
3. Independent Research Consultant, Dar es Salaam, Tanzania
4. Institute for the Study of Collective Health, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
5. ABIA, Brazilian Interdisciplinary AIDS Association, Rio de Janeiro, Brazil