1. Department of General Surgery and Medical Surgical Specialties, University of Catania, Catania, Italy;
2. Department of Woman and Child Health, University of Padua, Padua, Italy;
3. Department of Obstetrics and Gynaecology, University of Western Ontario, London, ON, Canada;
4. Department of Public Health, School of Medicine, University of Naples “Federico II”, Naples, Italy;
5. MARGen Clinic, Granada, Spain