Drupal-Bibcite0<style face="normal" font="default" size="100%">Early response to inhaled bronchodilators and corticosteroids as a predictor of 12-month treatment responder status and COPD exacerbations</style><style face="normal" font="default" size="100%">Early response to inhaled bronchodilators and corticosteroids as a predictor of 12-month treatment responder status and COPD exacerbations</style>