title: The prevalence of lichen ruber planus in different geographical areas in Sweden.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D005260:Female; D006801:Humans; D008010:Lichen Planus / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D013548:Sweden