Exacerbation-like respiratory symptoms in individuals without chronic obstructive pulmonary disease: results from a population-based study
W C Tan, J Bourbeau, P Hernandez, K R Chapman, R Cowie, J M FitzGerald, D D Marciniuk, F Maltais, A S Buist, D E O'Donnell, D D Sin, S D Aaron, for the CanCOLD Collaborative Research Group
Thorax Aug 2014, 69 (8) 709-717; DOI: 10.1136/thoraxjnl-2013-205048