1. Department of Obstetrics and GynecologySant'Orsola‐Malpighi University Hospital, University of Bologna Bologna Italy
2. Department of Medicine and SurgeryUniversità Campus Bio‐Medico di Roma Rome Italy
3. Department of Obstetrics and GynecologyAzienda Ospedaliero Universitaria Integrata di Verona Verona Italy
4. Clinic for Gynecology and ObstetricsUniversity of Southampton, Kassel School of Medicine Kassel Germany