1. Departments of Clinical Sciences (E.R., M.L.M., C.C., V.F., E.D., S.M.), University of Rome “Sapienza,” 00161 Rome, Italy
2. Chemistry and Technology of Biologically Active Substances (F.M.), University of Rome “Sapienza,” 00161 Rome, Italy
3. Departments of Internal Medicine (V.C.), “Casa Sollievo della Sofferenza” Hospital, 71013 San Giovanni Rotondo, Italy
4. Department of Endocrinology (A.S.), “Casa Sollievo della Sofferenza” Hospital, 71013 San Giovanni Rotondo, Italy