1. Obstetrics and Gynaecology Department, Meir Medical Centre, Kfar Saba, Israel;
2. Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel;
3. The IVF Unit, Meir Medical Centre, Kfar Saba, Israel;
4. Department of Cytogenetics, Meir Medical Centre, Kfar Saba, Israel