[1] Fdn Policlin Univ A Gemelli Ist Ricovero & Cura C, Dept Woman Child & Publ Hlth, Rome, Italy
[2] Azienda Sanitaria Univ Friuli Cent, Santa Maria Misericordia Hosp, Clin Obstet & Gynecol, Dept Med Area DAME, Udine, Italy
[3] P Pederzoli Hosp, Obstet & Gynecol Unit, Verona, Italy
[4] Univ Messina, Dept Biomed Morphol & Funct Imaging Sci, Messina, Italy
[5] Univ Messina, Dept Human Pathol Adult & Childhood G Barresi, Messina, Italy
[6] Univ Cattolica Sacro Cuore, Dept Woman Child & Publ Hlth, Rome, Italy