Assessment of airway obstruction in epidemiological surveys by means of flow-volume curves.
D000293:Adolescent; D000328:Adult; D000402:Airway Obstruction / Q000175:diagnosis*; D004812:Epidemiologic Methods; D006801:Humans; D008875:Middle Aged; D012129:Respiratory Function Tests; D012494:Sampling Studies; D013147:Spirometry; D014692:Ventilation-Perfusion Ratio; D014797:Vital Capacity