1. Diabetes Branch, Division of Intramural Research, National Institute of Diabetes and Digestive and Kidney Diseases (E.A., N.A.G., P.G.), Bethesda, Maryland 20892
2. National Institute of Child Health and Human Development (C.A.K.), Bethesda, Maryland 20892
3. Diagnostic Radiology Department (J.L.D.), Clinical Center, National Institutes of Health, Bethesda, Maryland 20892
4. and Medical Director of Diabetes Life Care, School of Medicine, University of Connecticut (N.J.G.), Hartford, Connecticut 06105