- Correspondence to Dr Michael K. Stickland, Associate Professor, Division of Pulmonary Medicine, Department of Medicine, University of Alberta, 3-135 Clinical Sciences Building, Edmonton, Alberta, Canada T6G 2J3;
- Received April 25, 2016
- Revised July 28, 2016
- Accepted August 13, 2016
- First published September 9, 2016.
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