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This retrospective analysis of data from two multi-center, randomized, double-blind, parallel group studies compared the efficacy of fluticasone propionate/salmeterol (FSC) 250/50mcg twice daily with ipratropium bromide/albuterol (IB/ALB) 36/206 mcg four times daily in albuterol-reversible (n=320 [44%]) and non-reversible (n=399 [56%]) patients with COPD. In reversible and non-reversible patients,...
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