1. Division of Gynecology and Human Reproduction Physiopathology, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Italy
2. Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy
3. Department of Medicine, Surgery and Dentistry, Gynecology and Obstetrics Unit, Scuola Medica Salernitana, University of Salerno, Salerno, Italy