1. Gastroenterologist, Liver and gastrointestinal diseases research center, Tabriz University of Medical Sciences, Tabriz, Iran
2. Pulmonologist, Tuberculosis and Lung Disease Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
3. Infectious disease specialist, Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
4. Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
5. Internist, Liver and gastrointestinal diseases research center, Tabriz University of Medical Sciences, Tabriz, Iran