1 Reproductive Medicine Unit, Department of Obstetrics and Gynecology, The Baruch-Padeh Medical Center, Poriya, 15208 Israel; Azrieili Faculty of Medicine, Bar-Ilan University, Safed, Israel. Electronic address: jyounis@poria.health.gov.il.
2 Department of Evolutionary and Environmental Biology, University of Haifa, Haifa, Israel.
3 Glasgow Royal Infirmary, New Lister Bldg., School of Medicine, Dentistry & Nursing, University of Glasgow, Glasgow, United Kingdom; National Institute of Health Research, Bristol Biomedical Research Centre, Bristol, United Kingdom; The Fertility Partnership, Oxford, United Kingdom.