?:authorAffiliation
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[\'Division of Disease Prevention, Liwan District Center for Disease Control and Prevention of Guangzhou, Guangzhou 510000, China.\', \'Department of Medical Statistics, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China.\', \'Department of Epidemiology,School of Public Health, Sun Yat-sen University, Guangzhou 510080, China.\']
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