- Correspondence to Dr Robert G W Lambert, Department of Radiology and Diagnostic Imaging, University of Alberta, 2A2.41 WMC, 8440-112 Street, Edmonton, Alberta, Canada T6G 2B7;
- Received September 22, 2015
- Revised December 12, 2015
- Accepted December 21, 2015
- First published January 14, 2016.
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