[A survey of oral leukoplakia in 5,400 persons (author's transl)].
D000293:Adolescent; D000328:Adult; D000368:Aged; D002681:China; D005260:Female; D006801:Humans; D007972:Leukoplakia, Oral / Q000453:epidemiology* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D014029:Tobacco Use Disorder / Q000150:complications