1. Department of Obstetrics and Gynecology; Clinica Santa Maria Hospital; Bari Italy
2. Moscow Institute of Physics and Technology; State University;; Moscow Russian Federation
3. Department of Obstetrics and Gynecology and Centre for Perinatal and Reproductive Medicine; Santa Maria della Misericordia University Hospital; Perugia Italy
4. Department of Obstetrics and Gynaecology; Vito Fazzi Hospital; Piazza Muratore Lecce 73100 Italy