?:authorAffiliation
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[\'Chest Department, Assiut University, Assiut, Egypt.\', \'Department of Public Health and Community Medicine, Assiut University, Assiut, Egypt.\', \'Department of Tropical Medicine and Gastroenterology, Faculty of Medicine, Assiut University, Assiut, Egypt.\', \'Chest Department, Aswan Faculty of Medicine, Aswan, Egypt.\', \'Faculty of Nursing, Assiut University, Egypt.\']
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