Primary carcinoma of the lung in nonsmokers.
D000328:Adult; D000367:Age Factors; D000397:Air Pollution; D002277:Carcinoma / Q000453:epidemiology; D002294:Carcinoma, Squamous Cell / Q000453:epidemiology*; D004781:Environmental Exposure; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000453:epidemiology*; D008297:Male; D010414:Pennsylvania; D012737:Sex Factors; D012907:Smoking