Characteristics of COPD in never-smokers and ever-smokers in the general population: results from the CanCOLD study
W C Tan, D D Sin, J Bourbeau, P Hernandez, K R Chapman, R Cowie, J M FitzGerald, D D Marciniuk, F Maltais, A S Buist, J Road, J C Hogg, M Kirby, H Coxson, C Hague, J Leipsic, D E O'Donnell, S D Aaron, CanCOLD Collaborative Research Group
Thorax Sep 2015, 70 (9) 822-829; DOI: 10.1136/thoraxjnl-2015-206938
