- Correspondence to Dr Joe Brierley, Paediatric and Neonatal Intensive Care Unit, Great Ormond Street Hospital for Children NHS Trust, Great Ormond St, London, WC1N 3JH, UK;
- Received October 6, 2010
- Revised December 20, 2010
- Accepted January 16, 2011
- First published February 23, 2011.
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