1. Women and Children's Health Research Unit; Gertner Institute for Epidemiology & Health Policy Research Ltd.; Tel Hashomer Israel
2. Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
3. Division of Biostatistics and Epidemiology; Department of Environmental Health; Cincinnati Children's Hospital Medical Center; University of Cincinnati; Cincinnati Ohio
4. Assuta Medical Center; IVF Unit; Tel Aviv Israel
5. Sheba Medical Center; IVF Unit; Tel Aviv Israel
6. Shaarei-Zedek Medical Center; IVF Unit; Tel Aviv Israel
7. Wolfson Medical Center; IVF Unit; Tel Aviv Israel
8. Bnai-Zion Medical Center; IVF Unit; Tel Aviv Israel
9. Barzilai Medical Center, IVF Unit; Tel Aviv Israel
10. Hillel-Yafe Medical Center; IVF Unit; Tel Aviv Israel
11. Institute for Endocrinology and Diabetes; National Center for Childhood Diabetes; Schneider Children's Medical Center; Petah Tikva Israel
12. Assaf-Harofeh Medical Center; IVF Unit; Tel Aviv Israel