The efficacy and safety of inhaled fluticasone propionate/salmeterol and ipratropium/albuterol for the treatment of chronic obstructive pulmonary disease: An eight-week, multicenter, randomized, double-blind, double-dummy, parallel-group study

In this 8-week study, subjects with moderate to severe COPD experienced greater improvements in lung function and symptom measures with FSC than with IB/ALB.