1. Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
2. Fertility and IVF Unit, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel
3. Department of Epidemiology and Health Services Evaluation, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel