- Correspondence to Dr Alison Busfield, Child and Women's Health, Royal Devon and Exeter NHS Foundation Trust, Barrack Road, Exeter EX2 5DW, UK;
- Received 12 September 2011
- Revised 16 October 2012
- Accepted 17 October 2012
- Published in print 1 January 2013.
- Published online 19 December 2012.
- Published first 12 November 2012.
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