1. Department of Surgical and Biomedical Sciences, Section of Obstetrics and Gynecology, University of Perugia, Perugia, Italy
2. GeBiSa, Research Foundation, Perugia, Italy
3. Centro Europeo per la Medicina e la Ricerca (CEMER), Perugia, Italy
4. Centre of Perinatal and Reproductive Medicine, University of Perugia, Perugia, Italy
5. Second Department of Obstetrics and Gynecology, First Moscow State Sechenov Medical University, Moscow, Russia