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Some of the next articles are maybe not open access.
Role of Gastroesophageal Reflux Symptoms in Exacerbations of COPD
Chest, 2006Kenneth J Vega +2 more
exaly
Effect of fluticasone propionate/salmeterol (250/50μg) or salmeterol (50μg) on COPD exacerbations
Respiratory Medicine, 2008Antonio Anzueto +2 more
exaly

