1. Department of Obstetrics and Gynaecology, SS. Annunziata Hospital; G. D'Annunzio University of Chieti-Pescara; Chieti Italy
2. Department of Obstetrics and Gynecology; Fondazione Poliambulanza; Brescia Italy
3. Department of Obstetrics and Gynaecology; University of Rome Tor Vergata; Rome Italy
4. Department of Maternal-Fetal Medicine; Catholic University of the Sacred Heart; Rome Italy
5. Department of Medicine and Aging Sciences; University of Chieti-Pescara; Chieti Italy
6. Department of Clinical Medicine, Faculty of Health Sciences; UiT - The Arctic University of Norway; Tromsø Norway
7. Department of Obstetrics and Gynaecology; University Hospital of Northern Norway; Tromsø Norway