1 Gastroenterohepathology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran; Therapeutic Endoscopy and Advanced ERCP Ward, Department of Gastroenterology and Hepatology, Department of Internal Medicine, Nemazee Hospital, Shiraz University of Medical Sciences, Shiraz, Iran.
2 Department of Pathology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
3 Gastroenterohepathology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
4 Colorectal Research Center, Shahid Faghihi Hospital, Shiraz University of Medical Sciences, Shiraz, Iran.