1. Unit of Gynecology and Obstetrics, Department of Human Pathology in Adulthood and Childhood “G. Barresi”, University of Messina, Messina, Italy
2. Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Western University, London, Canada
3. Unidad de Endoscopia Ginecológica, Centro Gutenberg, Málaga, Spain
4. Department of Surgery and Specialities, Federal Fluminense University, Brazil
5. Department of Obstetrics and Gyneacology, School of Medicine, Cairo University, Cairo, Egypt
6. Department of Economics, Unit of Statistical and Mathematical Sciences, University of Messina, Messina, Italy
7. Obstetrics and Gynecology Unit, Department of General Surgery and Medical Surgical Specialties, University of Catania, Catania, Italy