[1] Azienda Osped Univ Policlin Duilio Casula, Ctr Integrato Procreaz Medicalmente Assist PMA & D, I-09042 Monserrato, Italy
[2] Univ Cagliari, Dept Obstet & Gynecol, I-09042 Monserrato, Italy
[3] Univ Cagliari, Policlin Univ Duilio Casula, Dept Obstet & Gynecol, I-09042 Monserrato, Italy
[4] Univ Trieste, Dept Med, Surg & Hlth Sci, I-34127 Trieste, Italy
[5] Hosp Univ Dexeus, Dept Obstet Gynecol & Reprod, Barcelona 08028, Spain
[6] Azienda Osped Univ Policlin Duilio Casula, Dept Radiol, I-09042 Monserrato, Cagliari, Italy
[7] Univ Navarra, Sch Med, Dept Obstet & Gynecol, Pamplona 31009, Spain