[1] Univ Naples Federico II, Dept Mol & Clin Endocrinol & Oncol, I-80131 Naples, Italy
[2] Univ Naples Federico II, Dept Neurol Sci, I-80131 Naples, Italy
[3] Univ Pisa, Dept Endocrinol, Pisa, Italy
[4] Univ Pisa, Dept Metab, Pisa, Italy
[5] Osped Maggiore Niguarda, Endocrine Unit, Milan, Italy
[6] Univ Padua, UO Neurochirurgia Endocrina, Padua, Italy
[7] Univ Turin, Dept Internal Med, Turin, Italy