Follow-up study of lung-cancer suspects in a mass chest x-ray survey.
D005500:Follow-Up Studies; D006801:Humans; D008168:Lung; D008175:Lung Neoplasms; D008400:Mass Chest X-Ray; D009369:Neoplasms; D011859:Radiography
CANCER; LUNGS, NEOPLASMS; ROENTGENOGRAPHY