1. Department of Gynecology and Obstetrics, University of Parma, I‑43125 Parma, Italy
2. Department of Gynecologic Oncology, University of Palermo, I-90127 Palermo, Italy
3. Department of Public Health, Workplace Prevention and Safety Service, AUSL1‑I.R.C.C.S. di Reggio Emilia, Service for Health and Safety on The Workplaces, I-42122 Reggio, Italy
4. Obstetrics and Gynecology Department, Ospedale degli Infermi, I‑13875 Biella, Italy