1. Department of Molecular and Developmental Medicine; University of Siena; Siena Italy
2. Center for Diagnosis and Treatment of Couple Sterility; S. Maria alle Scotte Hospital; Siena Italy
3. Department of Life Sciences; University of Siena; Siena Italy
4. Department of Obstetrics & Gynecology; Infertility & IVF Unit; The Chaim Sheba Medical Center; Tel Hashomer Israel