Cytologic population screening in the early detection of lung cancer.
D000328:Adult; D003581:Cytodiagnosis; D005387:Finland; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis*; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D012907:Smoking; D013183:Sputum / Q000032:analysis