1. AIDS Activities Coordinating Office, Philadelphia Department of Public Health, Philadelphia, PA, USA
2. François-Xavier Bagnoud Center, School of Nursing, Rutgers, The State University of New Jersey, Newark, NJ, USA
3. Division of HIV and STD Program, Los Angeles County Department of Public Health, Los Angeles, CA, USA
4. Maternal Child Adolescent Center for Infectious Diseases and Virology, Keck School of Medicine at the University of Southern California, Los Angeles, CA, USA
5. STD/HIV Program, Office of Public Health, Louisiana Department of Health and Hospitals, New Orleans, LA, USA