1. Department of Surgery B, Meir General Hospital and Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, Israel.
2. Department of Surgery, Shaare Zedek Medical Center, Jerusalem, Israel.
3. Coloproctology Unit, Sourasky Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Israel.
4. Department of Surgery B, Asaf Harofeh Hospital and Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, Israel.