1 Academic Unit of Obstetrics and Gynaecology, IRCCS Ospedale Policlinico San Martino, Genova, Italy.
2 Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DiNOGMI), University of Genova, Genova, Italy.
3 Department of General Surgery and Medical Surgical Specialties, Obstetrics and Gynecology Unit, Policlinico G. Rodolico, University of Catania, Catania, Italy.