[1] University of British Columbia,Collaboration for Outcomes Research and Evaluation, Faculty of Pharmaceutical Sciences
[2] University of British Columbia,Division of Respiratory Medicine, Department of Medicine, The UBC Centre for Heart Lung Innovation, St. Paul’s Hospital
[3] University of British Columbia,Institute for Heart and Lung Health, Division of Respiratory Medicine, Faculty of Medicine
[4] University of British Columbia,Centre for Clinical Epidemiology and Evaluation
[5] Gordon and Leslie Diamond Health Care Centre,UBC Division of Respiratory Medicine, Department of Medicine, The Lung Centre