1. Endocrinology Unit (S.M.C.), Università Cattolica, 00168 Rome, Italy
2. Endocrinology Unit (A.B.), Regina Elena National Cancer Institute, 00144 Rome, Italy
3. Department of Clinical and Molecular Medicine (P.M.), Medical Oncology Division, Sant'Andrea Hospital, Sapienza University of Rome, 00189 Rome, Italy
4. Department of Systems Medicine (L.D.V., F.T.), Chair of Medical Oncology, Tor Vergata University of Rome, 00133 Rome, Italy
5. Pituitary Center (R.S.), Division of Endocrinology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287