1. HIV Center for Clinical and Behavioral Studies, Columbia University and New York State Psychiatric Institute, New York, NY.
2. Health Behavior and Health Education, School of Public Health, University of Michigan, Ann Arbor, Michigan.
3. Harlem Hospital and College of Physicians & Surgeons and the Mailman School of Public Health, Columbia University, New York, New York.
4. Albert Einstein College of Medicine and Jacobi Medical Center, New York, New York.
5. Metropolitan Hospital Center and New York Medical College, New York, New York.