1. Department of Physiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
2. Assisted Conception Unit, 2nd Department of Obstetrics and Gynecology, Aretaieion Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
3. Department of Assisted Conception, Human Reproduction Genesis Athens Clinic, Athens, Greece
4. Department of Histology and Embryology, Faculty of Medicine, University of Thessaly, Larissa, Greece
5. Department fo Obsterics and Gynaecology, Assisted Conception Unit, General-Maternity District Hospital “Elena Venizelou”, Athens, Greece