Submucous fibrosis of the oral cavity. 2. Studies on epidemiology.
D000293:Adolescent; D000328:Adult; D000368:Aged; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009059:Mouth Diseases / Q000453:epidemiology* / Q000209:etiology