%0 Journal Article %T Responsiveness of Various Exercise-Testing Protocols to Therapeutic Interventions in COPD %A Benoit Borel %A Steeve Provencher %A Didier Saey %A Franç %A ois Maltais %J Pulmonary Medicine %D 2013 %I Hindawi Publishing Corporation %R 10.1155/2013/410748 %U http://dx.doi.org/10.1155/2013/410748