Lung cancer and its association with other primary malignancies.
D000328:Adult; D000367:Age Factors; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000150:complications*; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000150:complications*; D012737:Sex Factors; D012907:Smoking