Respiratory symptoms and pulmonary function in welders.
D000328:Adult; D000367:Age Factors; D000368:Aged; D001991:Bronchitis / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000453:epidemiology*; D012129:Respiratory Function Tests; D012140:Respiratory Tract Diseases / Q000453:epidemiology*; D012907:Smoking / Q000150:complications; D013147:Spirometry; D014896:Welding