1 HIV/AIDS Division, Department of Medicine, San Francisco General Hospital, University of California, San Francisco, CA, USA. gabriel.chamie@ucsf.edu.
2 Makerere University-University of California, San Francisco (MU-UCSF) Research Collaboration, Kampala, Uganda. gabriel.chamie@ucsf.edu.
3 Makerere University-University of California, San Francisco (MU-UCSF) Research Collaboration, Kampala, Uganda.
4 Center for AIDS Prevention Studies, Department of Medicine, University of California, San Francisco, CA, USA.