1. Department of Medicine, San Francisco General Hospital, University of California, San Francisco, San Francisco, CA 94110 USA.
2. Department of Medicine, Stanford University, Stanford, CA 94304, USA.
3. Department of Pediatrics, University of California, San Francisco, San Francisco, CA 94110, USA.
4. Infectious Disease Research Collaboration, Kampala, Uganda.
5. Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA 94143, USA.
6. School of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda.