[1] IRCCS Azienda Osped Univ Bologna, Div Gynaecol & Human Reprod Physiopathol, Dipartimento Osped Donna & Bambino, Bologna, Italy
[2] Alma Mater Studiorum Univ Bologna, Dept Med & Surg Sci, Bologna, Italy
[3] Aristotle Univ Thessaloniki, Med Sch, Unit Reprod Endocrinol, Dept Obstet & Gynecol 1, Thessaloniki, Greece