1. Centers for Disease Control and Prevention, National Center for HIV, STD and TB Prevention, Office of Global AIDS Activities, Atlanta, Georgia, Center of Urban Eidemiological Studies, New York Academy of Medicine, New York, New York
2. Center of Urban Eidemiological Studies, New York Academy of Medicine, New York, New York
3. Centers for Disease Control and Prevention, National Center for HIV, STD adn TB Prevention, Division of HIV and AIDS Prevention, Atlanta, Georgia