1. 1st Department of Obstetrics and Gynaecology, Alexandra Hospital, National and Kapodistrian University of Athens, 11528 Athens, Greece
2. Medicine, Brighton and Sussex Medical School, Brighton BN1 9PX, UK
3. Obstetrics and Gynaecology Department, IRRCS San Raffaele Hospital, Vita-Salute San Raffaele University, 20125 Milan, Italy