1. Manchester Centre for Sexual Health, The Hathersage Centre, 280, Upper Brook Street, Manchester M13 OFH
2. Department of Genitourinary Medicine, Mortimer Market Centre, Off Capper Street, London WC1E 6JB
3. Department of Genitourinary Medicine, Ambrose King Centre, The Royal London Hospital, Turner Street, London E1 1BB
4. Department of Genitourinary Medicine, Whittall Street Clinic, Whittall Street, B4 6DH
5. Department of Genitourinary Medicine, Outpatients Department, North Manchester General Hospital, Pennine Acute Hospitals NHS Trust, Crumpsall, Manchester M13 9WL
6. Department of Clinical Virology, Manchester Royal Infirmary, Oxford Road, Manchester M13 9WL
7. Royal Infirmary of Edinburgh, 51 Little France Cr, Old Dalkeith Road, Edinburgh EH16 4SA, UK(the Syphilis Guidelines Revision Group 2008)