Effect of smoking on the survival of patients with lung cancer.
D000230:Adenocarcinoma / Q000401:mortality; D002294:Carcinoma, Squamous Cell / Q000401:mortality; D006801:Humans; D008175:Lung Neoplasms / Q000401:mortality*; D008297:Male; D009362:Neoplasm Metastasis; D011379:Prognosis; D012907:Smoking