Ward, Helen Spirometric and gas transfer discordance in a α1 -antitrypsin deficiency. patient characteristics and progression. [electronic resource] - Chest Jun 2014 - 1316-1324 p. digital Publication Type: Journal Article ISSN: 1931-3543 Standard No.: 10.1378/chest.13-1886 doi Subjects--Topical Terms: Carbon Monoxide--metabolismDisease ProgressionFemaleHumansLung Volume MeasurementsMaleMiddle AgedPhenotypePulmonary Gas Exchange--physiologySpirometryTomography, X-Ray Computedalpha 1-Antitrypsin Deficiency--genetics