1. Division of STD Prevention, National Center for HIV, Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA.
2. Florida Department of Health, Tallahassee, Florida, USA.
3. Louisiana Department of Health-STD/HIV/Hepatitis Program, New Orleans, Louisiana, USA.
4. Michigan Department of Health and Human Services, Lansing, Michigan, USA.