- Correspondence to Surg Lt Cdr Adrian Proffitt RN, Department of Medicine, University Hospital of North Staffordshire, Stoke-on-Trent, ST4 6QG, UK;
- Received October 2, 2013
- Revision received October 17, 2013
- Accepted October 19, 2013
- First published November 19, 2013.
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