1. Institute of Endocrinology (M.R., G.A., G.M., A.D.B., M.R.N., A.B., C.C.), 80121 Naples, Italy
2. II University of Naples, and Institute of Endocrinology (B.B.), 80121 Naples, Italy
3. Department of Mathematics and Statistics (S.B.), University Federico II, 80121 Naples, Italy
4. Department of Internal Medicine (D.G.), Hospital Saint-Pierre, Université Libre de Bruxelles, 1000 Brussels, Belgium