1. University Federico II (A.C., R.P., G.L.), 80131 Naples, Italy
2. Division of Endocrinology, Hospital Niguarda Ca Granda (R.A., R.C.), 20162 Milan, Italy
3. Departments of Molecular and Clinical Endocrinology and Oncology and Neurological Sciences, Section of Neurosurgery (P.C., L.M.C.), 80131 Naples, Italy
4. Division of Neurosurgery, Neurologic Institute Carlo Besta (G.L., A.L.), 20162 Milan, Italy