1. Harvard School of Public Health, Boston, Mass., USA
2. GlaxoWellcome, Research Triangle Park, NC, USA
3. Massachusetts General Hospital and Harvard Medical School, Boston, Mass., USA
4. Merck Co, Inc., West Point, Pa., USA
5. Royal Free Hospital and University College Medical School, London, UK
6. Robert Wood Johnson Medical School, Camden, NJ, USA
7. Hopital L'Archet, Nice, France
8. Columbia University College of Physicians and Surgeons, New York, NY, USA
9. BC Center for Excellence in HIV/AIDS, Vancouver, BC, Canada
10. Stanford Medical School, Palo Alto, Calif., USA
11. Gilead Science, Foster City, Calif., USA
12. Ohio State University School of Medicine, Columbus, Ohio, USA
13. Geneva University Hospital, Geneva, Switzerland
14. Stanford University School of Medicine, Palo Alto, Calif., USA
15. Center for Drug Evaluation and Research, Food and Drug Administration, Rockville, Md., USA
16. Agouron Pharmaceuticals, La Jolla, Calif., USA
17. Goethe University, Frankfurt, Germany
18. University of Pittsburgh and Pittsburgh VA HealthCare System, Pittsburgh, Pa., USA