1. Department of Obstetrics and Gynecology, Democritus University of Thrace, Dragana, Alexandroupolis, Greece
2. Department of Obstetrics and Gynecology, National and Kapodistrian University of Athens, General Hospital of Athens “ALEXANDRA,” Athens, Greece
3. Department of Surgery, University Hospital of Larissa, Larissa, Greece
4. Department of Surgery, National and Kapodistrian University of Athens, Laikon General Hospital, Athens, Greece
5. Department of Pathology, Democritus University of Thrace, Dragana, Alexandroupolis, Greece