1. Department of Endocrinology and Metabolism (J.L.-S., C.C., M.M.), Section of Endocrinology, Ospedale di Cisanello, University of Pisa, Pisa 56126, Italy;
2. Departament de Bioquímica i Biologia Molecular (J.L.-S., J.M.A.), Universitat de Barcelona, Barcelona 08071, Spain
3. Institut National de la Santé et de la Recherche Médicale U-636 (P.A.G.), Centre de Biochimie, Parc Valrose, Nice 06108, France;