1 Respiratory Health Strategic Clinical Network (Stickland, Sharpe), Alberta Health Services; Faculty of Medicine and Dentistry (Stickland), University of Alberta, Edmonton, Alta.; Cumming School of Medicine (Sharpe), University of Calgary, Calgary, Alta. Michael.stickland@ualberta.ca.
2 Respiratory Health Strategic Clinical Network (Stickland, Sharpe), Alberta Health Services; Faculty of Medicine and Dentistry (Stickland), University of Alberta, Edmonton, Alta.; Cumming School of Medicine (Sharpe), University of Calgary, Calgary, Alta.