1. Department of Endocrinology (B.C., C.P., J.G., A-F. B., F.M.-J.), Institut National de la Santé et de la Recherche Médicale, Unité 567-Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) 8104, Cochin Institute, Paris 75014, France
2. Department of Endocrinology and Diabetes (P.B., F.M.-J.), Department of Hormonal Biochemistry and University of Paris VII School of Medicine, Saint-Louis Hospital, Paris 75010, France
3. CNRS-UMR 5018 (R.B.), Paul Sabatier University, Toulouse 31062, France
4. Research Division (C.R.K.), Joslin Diabetes Center, Department of Medicine, Harvard Medical School, Boston, Massachusetts 02215