- Correspondence to Sqn Ldr Robert M Gifford, British Heart Foundation Centre for Cardiovascular Science, QMRI, Room C3.01, 47 Little France Avenue, Edinburgh EH16 4TJ, UK;
- Received October 6, 2016
- Revision received December 15, 2016
- Accepted January 27, 2017
- First published February 17, 2017.
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