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Changes in FEV1, VC, Raw and sRaw after salbutamol and ipratropium in five COPD patients (GOLD III). All changes are significant (P < 0.05) except the changes in FEV1 after salbutamol and VC after ipratropium.
Abbreviations: FEV1, forced expiratory volume in 1 second; VC, vital capacity; SE, standard error; SD, standard deviation.
