1. Haitian Group for the Study of Kaposi's Sarcoma and Opportunistic Infections (GHESKIO), Port-au-Prince, Haiti.
2. Analysis Group, Boston, Massachusetts.
3. Department of Health Promotion and Disease Prevention, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, Florida.
4. Center for Global Health, Department of Medicine, Weill Cornell Medical College, New York, New York.