1. AGUNCO Obstetrics and Gynecology Centre, Rome, Italy
2. Department of Human Physiology and Pharmacology ‘Vittorio Erspamer’, University ‘La Sapienza’, Rome, Italy
3. Department of Obstetrics and Gynecology, San Raffaele Scientific Institute, University of Milan, Italy
4. Centre of Perinatal and Reproductive Medicine, Department of Gynecological, Obstetrical and Paediatric Sciences, University of Perugia, Perugia, Italy