1. Digestive Diseases Research Center Digestive Diseases Research Institute, Tehran University of Medical Sciences Tehran Iran
2. Student Research Committee Babol University of Medical Sciences Babol Iran
3. Division of Gastroenterology, and Division of Biomedical Informatics University of California San Diego La Jolla California USA
4. NAFLD Research Center, Division of Gastroenterology and Hepatology, Department of Medicine University of California San Diego La Jolla California USA