1. Departments of Medicine (R.R., I.K., M.R.O.-M., G.H.W., G.K.A.) Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115
2. Department of Pharmacology, New York Medical College (C.T.S.), Valhalla, New York 10595
3. Departments of Pathology (H.G.R.), Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115