1Department of Internal Medicine, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
2Gastrointestinal Cancer Research Center, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
3Department of Community Medicine, Zabol University of Medical Sciences, Zabol, Iran
4Health Sciences Research Center, Addiction Institute, Mazandaran University of Medical Sciences, Sari, Iran
5Gastrointestinal Cancer Research Center, Mazandaran University of Medical Sciences, Sari, Iran
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