Canadian Cohort Obstructive Lung Disease (CanCOLD): Fulfilling the need for longitudinal observational studies in COPD

Jean Bourbeau, Wan C. Tan, Andrea Benedetti, Shawn D. Aaron, Kenneth R. Chapman, Harvey O. Coxson, Robert Cowie, Mark Fitzgerald, Roger Goldstein, Paul Hernandez, Jonathon Leipsic, Francois Maltais, Darcy Marciniuk, Denis O'donnell, Don D. Sin