- Correspondence to Dr Carl McQueen, Academic Department of Anaesthesia, Critical Care, Pain and Resuscitation Research, MIDRU Building, Birmingham Heartlands Hospital, Bordesley Green East, Birmingham B9 5SS, UK;
- Received June 27, 2013
- Revised August 8, 2013
- Accepted August 12, 2013
- First published September 4, 2013.
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