1. Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
2. Department of Biomedical Sciences, Humanitas University, Milan, Italy
3. Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
4. IBD Center, Humanitas Clinical and Research Center, IRCCS, Rozzano, Italy
5. Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
6. Department of Gastroenterology and Hepatology, Mashhad University of Medical Sciences, Mashhad, Iran
7. Metabolic Diseases Research Center, Research Institute for Prevention of Non-Communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran
8. Isfahan University of Medical Science, Isfahan University of Medical Science, Isfahan, Iran
9. Medicine Faculty of Mashhad Branch, Islamic Azad University, Mashhad, Iran
10. Faculty of Mashhad Branch, Islamic Azad University, Mashhad, Iran
11. Department of Medical Sciences, Hormozgan University, Hormozgan, Iran
12. Colorectal division of surgrical ward, Taleghani hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran