Respiratory impairment in simple coal workers' pneumoconiosis.
D000328:Adult; D000368:Aged; D000402:Airway Obstruction / Q000150:complications; D000403:Airway Resistance; D003032:Coal Mining; D006801:Humans; D006976:Hypertension, Pulmonary / Q000150:complications / Q000503:physiopathology; D008170:Lung Compliance; D008297:Male; D008875:Middle Aged; D011009:Pneumoconiosis / Q000150:complications / Q000000981:diagnostic imaging / Q000503:physiopathology*; D011653:Pulmonary Diffusing Capacity; D011859:Radiography; D012119:Respiration; D012129:Respiratory Function Tests; D012907:Smoking / Q000150:complications; D013147:Spirometry; D014481:United States; D014797:Vital Capacity