1. Department of Gastroenterology and Liver Diseases, School of Medicine, North Khorasan University of Medical Sciences, Bojnurd, Iran
2. Addiction and Behavioral Research Center, Department of Psychiatrics, School of Medicine, North Khorasan University of Medical Sciences, Bojnurd, Iran
3. Department of Health Education and Promotion, North Khorasan University of Medical Science, Bojnurd, Iran
4. Modeling in Health Research Center, Department of Epidemiology and Biostatistics, School of Public Health, Shahrekord University of Medical Sciences, Shahrekord, Iran
5. Department of Public Health, School of Nursing, North Khorasan University of Medical Sciences, Bojnurd, Iran
6. Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
7. Department of Adults Hematology and Oncology, School of Medicine, North Khorasan University of Medical Sciences, Bojnurd, Iran
8. Department of Public Health, School of Public Health, North Khorasan University of Medical Sciences, Bojnurd, Iran