Tobacco habits in carcinoma of the upper respiratory tract.
D000368:Aged; D002294:Carcinoma, Squamous Cell; D005260:Female; D006801:Humans; D008048:Lip Neoplasms; D008297:Male; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000209:etiology*; D009369:Neoplasms / Q000517:prevention & control; D009538:Nicotine / Q000009:adverse effects; D010947:Plants, Toxic; D012142:Respiratory Tract Neoplasms / Q000209:etiology*; D012189:Retrospective Studies; D012907:Smoking; D014026:Nicotiana
D009538:Nicotine