The effect of age at smoking initiation on lung cancer risk.
Gefeller
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D000293:Adolescent; D000328:Adult; D000367:Age Factors; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000453:epidemiology* / Q000209:etiology; D008297:Male; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects / Q000639:trends*