title: Risk of lung cancer according to histologic type and cigarette dosage.
mesh_terms: D000230:Adenocarcinoma / Q000209:etiology; D000368:Aged; D002277:Carcinoma / Q000145:classification / Q000209:etiology; D002283:Carcinoma, Bronchogenic / Q000209:etiology*; D002294:Carcinoma, Squamous Cell / Q000209:etiology*; D006801:Humans; D008175:Lung Neoplasms / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D009538:Nicotine / Q000008:administration & dosage; D011446:Prospective Studies; D012907:Smoking / Q000150:complications*; D011795:Surveys and Questionnaires; D014944:World Health Organization
chemical_list: D009538:Nicotine