Using the lower limit of normal for the FEV1/FVC ratio reduces the misclassification of airway obstruction.
Swanney MP; Ruppel G; Enright PL; Pedersen OF; Crapo RO; Miller MR; Jensen RL; Falaschetti E; Schouten JP; Hankinson JL; Stocks J; Quanjer PH; Thorax, 2008, vol. 63, issue 12, p 1046, ISSN 14683296. ISBN 14683296.

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