1. Division of HIV Prevention, Centers for Disease Control and Prevention , Atlanta, Georgia , USA
2. Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health , Baltimore, Maryland , USA
3. Division of Infectious Disease, Emory School of Medicine , Atlanta, Georgia USA
4. Department of Biostatistics, Harvard University , Boston, Massachusetts , USA
5. Division of Research, Kaiser Permanente Northern California , Oakland, California , USA
6. Departments of Medicine & of Biostatistics, Vanderbilt University School of Medicine , Nashville, Tennessee , USA
7. Kaiser Permanente Mid-Atlantic Permanente Research Institute , Rockville, Maryland , USA
8. Division of Infectious Diseases, UT Southwestern Medical Center , Dallas, Texas , USA
9. Gillings School of Global Public Health, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina , USA
10. Southern Alberta HIV Clinic , Calgary, Alberta , Canada
11. Rollins School of Public Health & School of Medicine, Emory University , Atlanta, Georgia , USA
12. Center for AIDS Research, University of Washington , Seattle, Washington , USA
13. Johns Hopkins School of Medicine , Baltimore, Maryland , USA
14. Vanderbilt University Medical Center , Nashville, Tennessee , USA
15. Department of Epidemiology & Population Health, Albert Einstein College of Medicine , Bronx, New York , USA