- Correspondence to Dr B F Flanagan, Department of Women's and Children's Health, Institute of Translational Medicine, University of Liverpool, Alder Hey Children's NHS Foundation Trust Hospital, Eaton Road, Liverpool, L12 2AP, UK;
- Received June 15, 2012
- Revised July 31, 2012
- Accepted August 20, 2012
- First published September 21, 2012.
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