FEV1forced expiratory volume in one second(English)CAT, COPD, FEF25–75, FEV, FRC, FVC, PFT, RV, TLC, TLCO, VA, PC15, FEV1/FVCRespiratory system, Diagnosticshttps://doi.org…0330-018-5659-9« FEVFEV1/FVC »