1. Bristol Medical School, Population Health Sciences Institute University of Bristol Bristol UK
2. Division of Epidemiology and Biostatistics, School of Public Health University of California Berkeley Berkeley California USA
3. Facente Consulting Richmond California USA
4. Department of Epidemiology and Biostatistics University of California San Francisco San Francisco California USA
5. San Francisco AIDS Foundation San Francisco California USA
6. Springboard HealthLab Berkeley California USA
7. University of California San Francisco Alliance Health Project San Francisco California USA
8. San Francisco Department of Public Health San Francisco California USA