1. Department of Nuclear Medicine, Medical School, University of Thessalia, Larissa, Greece
2. Department of Obstetrics and Gynecology, Medical School, University of Thessalia, Larissa, Greece
3. Department of Obstetrics and Gynecology, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
4. Department of Obstetrics and Gynecology, Medical School, National and Kapodestrian University of Athens, Athens, Greece