Betel nut chewing and mouth cancer in Taiwan. 2. Observation of the oral mucosa in the betel nut chewer.
D000328:Adult; D001114:Areca; D002118:Calcium / Q000009:adverse effects; D006801:Humans; D008297:Male; D009062:Mouth Neoplasms / Q000453:epidemiology* / Q000209:etiology*; D010946:Plants, Medicinal; D013624:Taiwan
D002118:Calcium