1. Medical ServiceVA Medical CenterWashingtonDistrict of Columbia
2. George Washington University School of Medicine and Health SciencesWashingtonDistrict of Columbia
3. Uniformed Services University of the Health SciencesBethesdaMaryland
4. Medical ServiceVA Medical CenterWest RoxburyMassachusetts
5. Harvard Medical SchoolBostonMassachusetts
6. Division of General Medicine and Primary CareBeth Israel Deaconess Medical CenterBostonMassachusetts
7. Institute of Human VirologyDivision of Infectious DiseasesUniversity of Maryland School of MedicineBaltimoreMaryland