Iyad Khamaysi1,2, Leonid Malkin3. 1. The Ruth and Bruce Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, POB 9602, 31096, Haifa, Israel. k_iyad@rambam.health.gov.il. 2. Department of Gastroenterology, Rambam Health Care Campus, Haifa, Israel. k_iyad@rambam.health.gov.il. 3. Department of Pathology, Rambam Health Care Campus, Haifa, Israel.