Document Type : Research Paper
Authors
1 Department of Biostatistics, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran.
2 Assistant Professor of Pediatrics Gastroenterology Department of Pediatrics, School of Medicine Ayatollah Mousavi Hospital Zanjan University of Medical Sciences, Zanjan, Iran
3 Student Research Committee, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
Abstract
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