?:authorAffiliation
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[\'Clinical Research Unit, Mashhad University of Medical Sciences, Mashhad, Iran.\', \'Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.\', \'Student Research Committee, School of Nursing and Midwifery, Mashhad University of Medical Sciences, Mashhad, Iran.\', \'Clinical Research Development Unit, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.\', \'Lung Diseases Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.\', \'Department of Gastroenterology and Hepatology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.\']
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