- Correspondence to Dr Olivia Louise Liddle, Department of Sexual Health, King's College Hospital NHS Foundation Trust, Caldecot Centre, 15-22 Caldecot Road, London, SE5 9RS, UK;
- Received September 18, 2014
- Revised October 28, 2014
- Accepted November 8, 2014
- First published November 28, 2014.
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