1. Institut National de la Santé et de la Recherche Médicale, Unité 478, Faculté de Médecine Xavier Bichat (P.S., Y.K., M.-H.L., E.P., M.L., M.-C.Z.), 75018 Paris, France
2. Division of Endocrinology (P.S., D.A.), Department of Medical and Surgical Sciences, University of Padova, 35100 Padova, Italy
3. Division of Nephrology, Robert Debré Hospital (A.-L.L.), 75019 Paris, France
4. Division of Pediatric Endocrinology (U.K.), Department of Pediatrics, Ludwig Maximilian University of Munich, 80337 Munich, Germany
5. Division of Nephrology (R.S., P.N.), 75015 Paris, France
6. Division of General Pediatrics (V.A.), Department of Pediatrics, Necker-Enfants Malades Hospital, 75015 Paris, France
7. Institute G. Gaslini (E.D.B., A.N.), Division of Pediatrics I, 16148 Genova, Italy
8. Henri Mondor Hospital (A.R.), 15002 Aurillac, France; Centro Diagnostico Italiano (M.B.), 20147 Milan, Italy
9. Department of Internal Medicine (M.C.), Chair of Endocrinology, University Roma “Tor Vergata,” 00133 Rome, Italy
10. Division of Neonatology (V.P-Y., J.P.C.), Le Havre Hospital, 76083 Le Havre, France
11. Division of Pediatrics (C.D.G.), Orsay General Hospital, 91405 Orsay, France
12. Department of Endocrinology (A.M.F., P.L.), Niguarda Ca’Granda Hospital, 20162 Milan, Italy