1. Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
2. Department of Regenerative Medicine, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, Acecr, Tehran, Iran
3. Gastroenterology and Hepatobiliary Research Center, Imam Reza Hospital, Tehran, Iran
4. Sernova Corp, London, Ontario, Canada
5. Digestive Diseases Research Center, Digestive Diseases Research Institute, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran