Assessment of airway closure using the closing volume method.
D000305:Adrenal Cortex Hormones / Q000627:therapeutic use; D000328:Adult; D000367:Age Factors; D000402:Airway Obstruction / Q000175:diagnosis*; D001128:Argon; D001249:Asthma / Q000188:drug therapy; D006801:Humans; D008722:Methods; D008944:Mitral Valve Insufficiency / Q000175:diagnosis; D009584:Nitrogen; D012119:Respiration; D012907:Smoking; D013147:Spirometry; D014797:Vital Capacity; D014978:Xenon
D000305:Adrenal Cortex Hormones; D014978:Xenon; D001128:Argon; D009584:Nitrogen