- Correspondence to Dr Nicola Mackintosh, King's College London, Women's Health Academic Centre King's Health Partners, 10th Floor North Wing, St Thomas’ Hospital, Westminster Bridge Road, London SE1 7EH, UK;
- Received December 21, 2012
- Revised July 2, 2013
- Accepted July 3, 2013
- First published July 18, 2013.
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