1. Department of Andrology, International Islamic Center for Population Studies and Research, Al-Azhar University, Cairo, Egypt
2. Al-Azhar University, Cairo, Egypt
3. Department of Embryology, International Islamic Center for Population Studies and Research, Al-Azhar University, Cairo, Egypt
4. Department of Dermatology, Venereology and Andrology, Faculty of Medicine, Al-Azhar University, Cairo, Egypt