1. AIDS Clinical Trials Unit University of North Carolina Chapel Hill NC USA
2. AIDS Healthcare Foundation Beverly Hills CA USA
3. New York Medical College Valhalla NY USA
4. Alameda County Medical Center Oakland CA USA
5. GlaxoSmithKline, Research Triangle Park Research Triangle Park NC USA
6. Orlando Immunology Center Orlando FL USA
7. Kaiser Foundation Health Plan of Georgia, Inc. Atlanta GA USA
8. ViiV Healthcare, Research Triangle Park NC USA