?:authorAffiliation
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[\'Department of Medical Statistics and Epidemiology, Sun Yat-Sen University School of Public Health, Guangzhou, China.\', \'Department of Refractive and Low Vision, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, China.\', \'Health Promotion Center for Primary and Secondary Schools of Guangzhou Municipality, Guangzhou, China.\']
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