1. Israel Center for Disease Control, Ministry of Health, Ramat Gan, Israel.
2. Bariatric Surgery Department, Assuta Medical Center, Tel Aviv, Israel.
3. School of Public Health, University of Haifa, Haifa, Israel.
4. Department of Surgery C, Chaim Sheba Medical Center, Ramat Gan, Israel.
5. Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.