P122 Combination therapy with inhaled salmeterol plus fluticasone propionate is more effective than salmeterol alone in reducing the risk of clinically important deterioration in COPD: A post-hoc analysis of the TORCH trial
P122 Combination therapy with inhaled salmeterol plus fluticasone propionate is more effective than salmeterol alone in reducing the risk of clinically important deterioration in COPD: A post-hoc analysis of the TORCH trial