Smoking withdrawal in the reduction of risk of lung cancer.
D000328:Adult; D000367:Age Factors; D000368:Aged; D000704:Analysis of Variance; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology / Q000401:mortality / Q000517:prevention & control*; D008297:Male; D008875:Middle Aged; D009518:New York; D012189:Retrospective Studies; D012907:Smoking; D013997:Time Factors