?:authorAffiliation
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[\'Pediatrics Department, Bach Mai Hospital, Hanoi, Viet Nam.\', \'University of Medicine and Pharmacy, Viet Nam National University, Hanoi, Viet Nam.\', \'The General Department of Preventive Medicine, Ministry of Health, Hanoi, Viet Nam.\', \'National Institute of Health Sciences, Bach Mai Hospital, Hanoi, Viet Nam.\']
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