[1] Univ Perugia, Dept Expt Med, I-06100 Perugia, Italy
[2] Int Sci Inst Paul VI, I-00168 Rome, Italy
[3] Fdn Policlin A Gemelli, Div Endocrinol, I-00168 Rome, Italy
[4] Univ Perugia, Dept Pharmaceut Sci, I-06100 Perugia, Italy
[5] Catholic Univ, Inst Chem & Clin Biochem, I-00168 Rome, Italy
[6] Univ Ferrara, Dept Life Sci & Biotechnol, I-44121 Ferrara, Italy
[7] Univ Perugia, Div Med Androl & Endocrinol Reprod, I-05100 Terni, Italy
[8] St Mary Hosp, I-05100 Terni, Italy
[9] Univ Perugia, Dept Med, I-06100 Perugia, Italy