1. American College of Physicians, Philadelphia, Pennsylvania (A.Q.)
2. Yale School of Medicine, New Haven, Connecticut (R.M.M.)
3. Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania (D.O.)
4. Cleveland Clinic, Cleveland, Ohio (P.B.)
5. Georgetown University Medical Center, Washington, DC (K.L.)
6. Portland VA Medical Center, Portland, Oregon (D.L.K.)