1. Andrologic Unit (A.B., M.R.C.V., D.F., S.F., F.F.) Department of Internal Medicine, University of L’Aquila, 67100 L’Aquila, Italy
2. Instituto di Ricovero e Cura a Carattere Scientifico San Raffaele Sulmona (A.B.), 67039 Sulmona, Italy
3. Department of Biomedical Sciences (M.M.), University of Teramo, 64100 Teramo, Italy
4. European Center for Brain Research (M.M.), Santa Lucia Foundation, 00143 Rome, Italy