1. Department of Epidemiology, School of Public Health, Brown University, Providence, Rhode Island, USA
2. British Columbia Centre for Excellence in HIV/AIDS, Vancouver, British Columbia, Canada
3. Faculty of Health Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
4. Division of Infectious Diseases, Department of Medicine, Emory University, Atlanta, Georgia, USA
5. Department of Healthcare Policy and Research, Weill Cornell Medical College, New York, New York, USA
6. Department of Public Health Sciences, Leonard M. Miller School of Medicine, University of Miami, Miami, Florida, USA
7. Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, USA
8. National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
9. Department of Sociomedical Sciences, Mailman School of Public Health, Columbia University, New York, New York, USA
10. School of Medicine, University of California San Diego, La Jolla, California, USA