1 Center for Reproductive Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands; Department of Obstetrics & Gynecology, Faculty of Medicine, Cairo University, Cairo, Egypt; Egyptian Fertility IVF Center (EIFC-lVF), Cairo University, Cairo, Egypt;. Electronic address: mohamedyoussef1973@gmail.com.
2 Center for Reproductive Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands.
3 Department of Obstetrics & Gynecology, Faculty of Medicine, Cairo University, Cairo, Egypt.
4 UKSH, Campus Lubeck, Lubeck, Germany.
5 Department of Obstetrics & Gynecology, Faculty of Medicine, Cairo University, Cairo, Egypt; Egyptian Fertility IVF Center (EIFC-lVF), Cairo University, Cairo, Egypt;