1. Diabetes Unit, Section of Endocrinology and Departments of Medicine and Physiology, Boston University Medical Center, Boston, MA 02118, U.S.A.
2. Garvan Institute, Sydney, Australia
3. Division of Cardiology, Boston University Medical Center, Boston MA 02118, U.S.A.
4. Vascular Biology Unit, Boston University Medical Center, Boston MA 02118, U.S.A.
5. Cellular Stress Unit, MRC Clinical Sciences Center, Hammersmith Hospital, London W12 ONN, U.K.
6. Clinical Research Center, Temple University, School of Medicine, Philadelphia, PA, U.S.A.