[1] Arcispedale S. Maria Nuova- IRCCS,Department of Obstetrics and Gynecology
[2] University Hospital S. Orsola Malpighi,Department of Obstetrics and Gynecology
[3] Oncology and Gynecology Unit,Department of Obstetrics and Gynecology
[4] Ospedale Civile,Unit of Medicine
[5] Obstetrics and Gynecology Unit Ospedale Civile,Unit of Obstetrics and Gynecology
[6] Ospedale Civile,Unit of Obstetrics and Gynecology
[7] Hospital of Argenta,Unit of Obstetrics and Gynecology
[8] Ospedale G.B. Morgagni-L.Pierantoni,Clinical Area Government
[9] Ospedale degli Infermi,Statistics and Clinical Epidemiology Unit
[10] University Hospital S. Anna,Department of Obstetrics and Gynecology
[11] Health and Social Agency of Emilia-Romagna,undefined
[12] Arcispedale Santa Maria Nuova - IRCCS,undefined
[13] Arcispedale S. Maria Nuova- IRCCS; University of Modena and Reggio Emilia,undefined