1. Howard Hughes Medical Institute and Departments of Biochemistry and Molecular Biology and Medicine, The University of Chicago Chicago, Illinois
2. Steno Diabetes Center Gentofte, Denmark
3. Division of Endocrinology, Diabetes, and Metabolism, Department of Internal Medicine, Washington University School of Medicine St. Louis, Missouri
4. Division of Endocrinology and Metabolism, Department of Internal Medicine, The University of Michigan Ann Arbor, Michigan
5. Clinic for Diabetes and Metabolic Diseases Karlsburg, Germany
6. Diabetes Center, Tokyo Women's Medical College Tokyo, Japan