1. Larry L. Hillblom Islet Research Center (A.E.B., S.D., J.H., M.C., K.Z., P.C.B.), David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California 90095–7073
2. Institute of Pathology (H.F.), Division of Clinical and Functional Anatomy, Medical University of Innsbruck, A-6020 Innsbruck, Austria
3. St Josef Hospital of the Ruhr-University Bochum (J.J.M.), 44791 Bochum, Germany
4. Division of Endocrinology, Diabetes, Metabolism, and Nutrition (R.A.R.), Mayo Clinic College of Medicine, Rochester, Minnesota 55905