Dyspnoea and symptom burden in mild–moderate COPD: The canadian cohort obstructive lung disease study

Mathew Cherian, Dennis Jensen, Wan C. Tan, Sara Mursleen, Emma C. Goodall, Gilbert A. Nadeau, Amnah M. Awan, Darcy D. Marciniuk, Brandie L. Walker, Shawn D. Aaron, Denis E. O’donnell, Kenneth R. Chapman, François Maltais, Paul Hernandez, Don D. Sin, Andrea Benedetti, Jean Bourbeau