1. 1st Department of Obstetrics and Gynecology, National and Kapodistrian University of Athens, 115 28 Athens, Greece
2. Department of Obstetrics and Gynecology, Democritus University of Thrace, 681 00 Alexandroupolis, Greece
3. Laboratory of Chemistry Biology, National and Kapodistrian University of Athens, 115 28 Athens, Greece
4. 3rd Department of Obstetrics and Gynecology, National and Kapodistrian University of Athens, Medical School, Attikon Hospital, 124 62 Athens, Greece
5. 1st Department of Obstetrics and Gynecology, National and Kapodistrian University of Athens, 106 76 Athens, Greece