1. Department of Surgical Sciences; University of Turin; Turin Italy
2. Obstetrics & Gynecology Unit, Ospedale Martini; Turin Italy
3. Obstetrics & Gynecology Academic Unit, Ospedale Mauriziano; Turin Italy
4. Department of Gynecology and Obstetrics, Division of Ultrasound and Prenatal Diagnosis; ‘Città della Salute e della Scienza di Torino’ University Hospital; Turin Italy
5. Department of Gynecology and Obstetrics, Obstetrics & Gynecology Unit no. 3; ‘Città della Salute e della Scienza di Torino’ University Hospital; Turin Italy
6. Department of Lab Medicine, Clinical Biochemistry Unit; ‘Città della Salute e della Scienza di Torino’ University Hospital; Turin Italy
7. Unit of Clinical Epidemiology; ‘Città della Salute e della Scienza di Torino’ University Hospital and CPO Piemonte; Turin Italy
8. Department of Gynecology and Obstetrics; Obstetrics & Gynecology Academic Unit no. 2, ‘Città della Salute e della Scienza di Torino’ University Hospital; Turin Italy