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The prevalence of dental caries in urban areas is lower than that in rural areas--analysis of changes in the epidemiological characteristics of caries in urban and rural areas
HUANG Shaohong,WU Linmei
Journal of Prevention and Treatment for Stomatological Diseases . 2020, (5): 273 -278 .  DOI: 10.12016/j.issn.2096-1456.2020.05.001