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