- Correspondence to Dr Arivalagan Kannivelu, Department of Paediatrics, Royal Shrewsbury Hospital, Mytton Oak Road, Shrewsbury, Shropshire SY3 5PH, UK;
- Received July 11, 2012
- Revised October 3, 2012
- Accepted November 14, 2012
- First published December 14, 2012.
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