1. University of Miami Miller School of Medicine, Division of Endocrinology and Metabolism (M.C.M., J.M., M.C., L.D., R.S., A.C.), Miami, Florida 33136
2. Rush University Medical Center (T.L.F., A.C.B.), Chicago, Illinois 60612
3. Diabetes Research Institute (A.F.), Scarborough, Maine 04074
4. Maine Medical Center Research Institute (A.H.), Scarborough, Maine 04074