- Correspondence to Dr Wan C Tan, UBC James Hogg Research Centre, Providence Heart+Lung Institute, University of British Columbia, St Paul's Hospital, Rm 166, 1081 Burrard Street, Vancouver, British Columbia, Canada V6Z 1Y6;
- Received February 13, 2015
- Revised May 8, 2015
- Accepted May 21, 2015
- First published June 5, 2015.
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- Data supplement 1 - Online supplement
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