title: Ventilatory study in simple coal worker's pneumoconiosis.
mesh_terms: D000368:Aged; D003032:Coal Mining; D005541:Forced Expiratory Volume; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging / Q000473:pathology; D008875:Middle Aged; D011009:Pneumoconiosis / Q000000981:diagnostic imaging / Q000209:etiology*; D011859:Radiography; D012120:Respiration Disorders / Q000000981:diagnostic imaging / Q000209:etiology; D012129:Respiratory Function Tests; D012907:Smoking; D013147:Spirometry; D013997:Time Factors; D014797:Vital Capacity