1 Gynaecologic and Obstetrics Clinic, Leopoldo Mandic Hospital.
2 Department of Obstetrics and Gynecology, Policlinic of Bari, University of Bari, Bari, Italy. Electronic address: damiani14@alice.it.
3 Gynaecologic and Obstetrics Clinic, Leopoldo Mandic Hospital; Isitituto San Raffaele, Univerisity of Milan Italy.
4 Gynaecologic and Obstetrics Clinic, Leopoldo Mandic Hospital; Department of Obstetrics and Gynecology, Policlinic of Bari, University of Bari, Bari, Italy.