RT Journal Article SR Electronic T1 Exercise Ventilation-CO2 Output Relationship in COPD and Heart Failure: A Tale of Two Abnormalities JF Respiratory Care FD American Association for Respiratory Care SP 1157 OP 1159 DO 10.4187/respcare.03433 VO 59 IS 7 A1 Poon, Chi-Sang YR 2014 UL http://rc.rcjournal.com/content/59/7/1157.abstract AB