1. 1st Department of Obstetrics and Gynecology, General Hospital of Athens ‘ALEXANDRA’, National and Kapodistrian University of Athens, Lourou and Vasilissis Sofias Ave, 11528 Athens, Greece
2. Department of Embryology, University of Thessaly, Mezourlo, 41110 Larissa, Greece
3. Department of Internal Medicine, General Hospital of Larisa, Tsakalof 1, 41221 Larisa, Greece
4. Department of Obstetrics and Gynecology, University General Hospital of Ioannina, University of Ioannina, Stavros Niarchos Str., 45500 Ioannina, Greece
5. Department of Obstetrics and Gynecology, General Hospital of Xanthi, Neapoli, 67100 Xanthi, Greece
6. Department of Obstetrics and Gynecology, Democritus University of Thrace, 6th km Alexandroupolis—Makris, 68100 Alexandroupolis, Greece
7. Department of Obstetrics and Gynecology, University Hospital of Larissa, Mezourlo, 41110 Larissa, Greece
8. Department of Obstetrics and Gynaecology, University of Ioannina, 45110 Ioannina, Greece
9. Department of Gynecology, Laiko General Hospital of Athens, Agiou Thoma 17, 11527 Athens, Greece