1. Department of Internal Medicine, Gut and Liver Research Center, Non-communicable Disease Research Institute, Mazandaran University of Medical Sciences, Sari, Iran
2. Mazandaran University of Medical Sciences, Sari, Iran
3. Student of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
4. Department of Gastroenterology, Imam Hospital, Tehran University of Medical Sciences, Tehran, Iran
5. Department of Internal Medicine, Rouhani Hospital, Babol University of Medical Sciences, Babol, Iran
6. Gut and Liver Research Center, Non-communicable Disease Research Institute, Mazandaran University of Medical Sciences, Sari, Iran