1. IVF Unit, Department of Obstetrics and Gynecology, Bnai-Zion Medical Center and the B. Rappaport Faculty of Medicine, The Technion, Haifa, Israel,
2. Department of Obstetrics and Gynecology, Carmel Medical Center, Haifa, Israel,
3. Department of Dermatology, Sheba Medical Center, Tel Hashomer, Haifa, Israel, and
4. Department of Pathology, Bnai-Zion Medical Center, Haifa, Israel