Dental caries among Egyptian school children of high and low socio-economic level.
el-Beheri
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D000367:Age Factors; D002648:Child; D003731:Dental Caries / Q000453:epidemiology*; D004534:Egypt; D005260:Female; D006801:Humans; D008297:Male; D012737:Sex Factors; D012923:Social Class; D012959:Socioeconomic Factors