1. Health Sciences Research center Addiction Institute, Mazandaran University of Medical Sciences Sari Iran
2. Traditional Medicine and History of Medical science Research center, Faculty of Iranian medicine Babol University of Medical Science Babol Iran
3. Department of Community Medicine Zabol University of Medical Sciences Zabol Iran
4. Department of Health Information Management, School of Allied Medical Sciences Tehran University of Medical Sciences Tehran Iran
5. Gastrointestinal Cancer Research Center, Faculty of Medicine Mazandaran University of Medical Sciences Sari Iran
6. Health Policy Research Center, Student Research Committee Institute of Health, Shiraz University of Medical Sciences Shiraz Iran
7. Gastrointestinal cancer research center Mazandaran University of Medical Sciences Sari Iran
8. Faculty of Health Mazandaran University of Medical Sciences Sari Iran