1. Psychiatry and Behavioral Sciences, University of Miami Miller School of Medicine, Miami, Florida, USA
2. Division of HIV/AIDS Prevention, U.S. Centers for Disease Control and Prevention, Atlanta, Georgia, USA
3. Carter Consulting Inc., Atlanta, Georgia, USA
4. School of Public Health, University of Alabama at Birmingham, Birmingham, Alabama, USA
5. Division of Infectious Diseases, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA