?:authorAffiliation
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[\'Department of Biostatistics, Peking University First Hospital, Beijing, People\'s Republic of China.\', \'Peking University Clinical Research Institute, Beijing, People\'s Republic of China.\', \'Children\'s Emergency Center, Gansu Provincial Maternity and Child-Care Hospital, Lanzhou, People\'s Republic of China.\', \'Department of Pediatric Gastroenterology, Second Hospital of Lanzhou University, Lanzhou, People\'s Republic of China.\']
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