Oral submucous fibrosis--an alternative hypothesis as to its causes.
D000747:Anemia, Hypochromic / Q000150:complications; D006801:Humans; D009059:Mouth Diseases / Q000209:etiology*; D009914:Oral Submucous Fibrosis / Q000209:etiology* / Q000473:pathology; D014804:Vitamin B Deficiency / Q000150:complications