1. University of Puerto Rico School of Medicine, San Juan, Puerto Rico
2. Tulane University Medical School, New Orleans, Louisiana
3. New Jersey Medical School, Newark, New Jersey
4. University of Alabama at Birmingham, Birmingham, Alabama
5. Division of AIDS, NIAID, Bethesda, Maryland
6. Harvard School of Public Health, Boston, Massachusetts
7. Pediatric, Adolescent, and Maternal AIDS Branch, NICHD, Bethesda, Maryland
8. Frontier Science and Technology Research Foundation, Amherst, New York
9. San Juan City Hospital, San Juan, Puerto Rico