Oral submucous fibrosis.
D006801:Humans; D007194:India; D007972:Leukoplakia, Oral / Q000150:complications; D009059:Mouth Diseases / Q000453:epidemiology; D009914:Oral Submucous Fibrosis / Q000453:epidemiology; D011230:Precancerous Conditions / Q000453:epidemiology