1 Department of Gynecologic Pathology, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy.
2 Department of Human Pathology in Adult and Developmental Age "Gaetano Barresi", Unit of Pathological Anatomy, University of Messina, AOU Policlinico G. Martino, Messina, Italy.
3 Division of Pathology, Vittorio Emanuele, University Hospital "Policlinico-Vittorio Emanuele", University of Catania, Italy.
4 Department of Obstetrics & Gynecology, University of Catania, Italy.
5 Department of Gynecologic Pathology, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Università Cattolica del Sacro Cuore, Rome, Italy.