title: Tobacco chewing in English coalminers (2). Malignant transformation in a tobacco-induced leukoplakia.
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000209:etiology*; D003032:Coal Mining; D004739:England; D006801:Humans; D007972:Leukoplakia, Oral / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000209:etiology*; D010947:Plants, Toxic; D012907:Smoking / Q000150:complications*; D014026:Nicotiana