Coalworkers' pneumoconiosis.
D000328:Adult; D000367:Age Factors; D003032:Coal Mining; D006801:Humans; D008297:Male; D008875:Middle Aged; D011009:Pneumoconiosis / Q000150:complications / Q000000981:diagnostic imaging / Q000401:mortality*; D011656:Pulmonary Emphysema / Q000150:complications; D011859:Radiography