- Correspondence to Dr Brian H Rowe, Department of Emergency Medicine, University of Alberta, 1G1.42 Walter C. Mackenzie Centre, 8440 112 Street, Edmonton, Alberta, Canada T6G 2B7;
- Received September 10, 2012
- Revised December 15, 2012
- Accepted December 18, 2012
- First published January 26, 2013.
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