%0 Journal Article %A Chi-Sang Poon %T Exercise Ventilation-CO2 Output Relationship in COPD and Heart Failure: A Tale of Two Abnormalities %D 2014 %R 10.4187/respcare.03433 %J Respiratory Care %P 1157-1159 %V 59 %N 7 %U https://rc.rcjournal.com/content/respcare/59/7/1157.full.pdf