1. Department of Gastroenterology, Rambam Health Care Campus, Technion-Israel Institute of Technology, Haifa, Israel
2. Lady Davis Carmel Medical Center, Haifa, Israel
3. Department of Gastroenterology and Hepatology, University Medical Center, Utrecht, The Netherlands
4. Beth Israel Medical Center, New York, New York, USA
5. Department of Gastroenterology, Tel Aviv Sourasky Medical Center and Tel Aviv University School of Medicine, Tel Aviv, Israel
6. Gastrointestinal Endoscopy Unit, Elisha Hospital, Technion-Israel Institute of Technology, Haifa, Israel