1. School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
2. Liver and Pancreatobiliary Diseases Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
3. Department of Radiology and Neurology, University of Alabama at Birmingham (UAB), Birmingham, AL, USA.
4. Digestive Disease Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
5. School of Medicine, Bushehr University of Medical Sciences, Bushehr, Iran.
6. Clinical Research Development Center, Qom University of Medical Sciences, Qom, Iran.
7. School of Medicine, Islamic Azad University of Sari, Sari, Iran.
8. School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
9. Department of Medicine, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
10. Student Research Committee, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
11. Department of Neurology, School of Medicine, Bushehr University of Medical Sciences, Bushehr, Iran.
12. Young Researchers and Elites Club, Faculty of Medicine, Islamic Azad University, Yazd Branch, Iran.
13. School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.