1. Department of Endocrinology and Metabolism (E.V., G.V., F.C., L.C., E.A., C.B., A.P., C.M.), University of Pisa, 56124 Pisa, Italy
2. Department of Clinical Sciences (D.D., R.D.F.), University of Roma “La Sapienza,” 00131 Roma, Italy
3. Department of Medicine and Pharmacology (J.P.B.), Columbia University, College of Physicians and Surgeons, New York, New York 10032