- Correspondence to Dr Vivienne Campbell, Department of Paediatric Neurodisability, Chailey Heritage Clinical Services, Beggars Wood Road, Nr Lewes, East Sussex BN84JN, UK;
- Received September 23, 2013
- Revised June 27, 2014
- Accepted July 4, 2014
- First published July 25, 2014.
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