1. Division of Endocrinology (G.I.), Department of Medicine, McMaster University, Hamilton, Ontario, Canada
2. Departments of Clinical Sciences (L.P., D.C., M.P., L.Z., R.C., C.L.), Sapienza University, Rome 00185, Italy
3. Surgery “Pietro Valdoni” (G.D.T.), Sapienza University, Rome 00185, Italy
4. Cardiology (S.S.), Sapienza University, Rome 00185, Italy