1. The Fenway Institute, Fenway Health , Boston, Massachusetts , USA
2. Harvard T. H. Chan School of Public Health , Boston, Massachusetts , USA
3. HIV/AIDS Bureau, Health Resources and Services Administration , Rockville, Maryland , USA
4. Boston University School of Public Health , Boston, Massachusetts , USA
5. Bouve College of Health Sciences, Northeastern University , Boston, Massachusetts , USA
6. AIDS United , Washington, District of Columbia , USA
7. Center for AIDS Prevention Studies, Division of Prevention Science, University of California, San Francisco , San Francisco, California , USA
8. Beth Israel Deaconess Medical Center, Harvard Medical School , Boston, Massachusetts , USA
9. Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School , Boston, Massachusetts , USA