RT Journal Article SR Electronic T1 Work productivity loss in mild to moderate COPD: lessons learned from the CanCOLD study JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1701154 DO 10.1183/13993003.01154-2017 VO 50 IS 3 A1 Riany de Sousa Sena A1 Sara Ahmed A1 Wan C. Tan A1 Pei Z. Li A1 Laura Labonté A1 Shawn D. Aaron A1 Andrea Benedetti A1 Kenneth R. Chapman A1 B. Walker A1 J. Mark Fitzgerald A1 Paul Hernandez A1 François Maltais A1 Darcy D. Marciniuk A1 Denis E. O'Donnell A1 Don D. Sin A1 Jean Bourbeau A1 , YR 2017 UL http://erj.ersjournals.com/content/50/3/1701154.abstract AB