- Correspondence to Dr An Vanthuyne, Burrell Street Sexual Health Clinic, Guy's and St.Thomas' Hospitals NHS Foundation Trust, 4-6 Burrell Street, London SE1 0UN, UK;
- Received October 20, 2014
- Revised November 4, 2015
- Accepted December 14, 2015
- First published January 14, 2016.
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