Reproducibility of spirometric measurements in normal subjects.
D000328:Adult; D001608:Beryllium / Q000009:adverse effects; D005500:Follow-Up Studies; D006801:Humans; D007545:Isoproterenol / Q000494:pharmacology; D009787:Occupational Medicine; D012907:Smoking; D013147:Spirometry
D007545:Isoproterenol; D001608:Beryllium