1. First Department of Obstetrics and Gynecology, Gynecological Oncology Unit, National and Kapodistrian University of Athens, 11528 Athens, Greece
2. Department of Anesthesiology and Pain Management, ‘Alexandra’ General Hospital, 11528 Athens, Greece
3. First Department of Propaedeutic Surgery, Hippocratio Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece