- Correspondence to Dr E Davenport, Department of Surgery, Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Trust, Queen Victoria Rd, Newcastle upon Tyne, Tyne and Wear NE1 4LP, UK;
- Received September 16, 2013
- Revised February 28, 2014
- Accepted March 13, 2014
- First published March 31, 2014.
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