1. Department of Gynecology; Azienda Ospedaliero Universitaria di Cagliari; Monserrato Italy
2. Department of Obstetrics and Gynecology; Clinica Universidad de Navarra; Pamplona Spain
3. Department of Obstetrics, Gynecology, and Reproduction; Institut Universitari Dexeus; Barcelona Spain
4. Department of Radiology; Azienda Ospedaliero Universitaria di Cagliari; Monserrato Italy