?:authorAffiliation
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[\'Department of Community Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai province, 50200 Thailand.\', \'Faculty of Medicine, Chiang Mai University, Chiang Mai province, 50200 Thailand.\', \'Department of Community Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai province, 50200 Thailand. Electronic address: ratana.sapbamrer@cmu.ac.th.\']
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