1. Specialist Registrar, The Mortimer Market Centre, Central and North West London NHS Foundation Trust, London WC1E 6JB and Academic Clinical Fellow, Centre for Sexual Health and HIV Research, Research Department of Infection and Population Health, University College London, London
2. Specialist Registrar, The Mortimer Market Centre, Central and North West London NHS Foundation Trust, London
3. Consultant, The Mortimer Market Centre, Central and North West London NHS Foundation Trust, London