1. University College London, London, UK
2. Institut de Recerca de la SIDA IrsiCaixa i Unitat VIH, Universitat Autònoma de Barcelona, Universitat de Vic, Catalonia, Spain
3. Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
4. Department of Virology, University Medical Centre, Utrecht, The Netherlands
5. Institut für Immunologie und Genetik, Kaiserslautern, Germany
6. Department of Experimental Medicine and Surgery, University of Rome Tor Vergata, Rome, Italy
7. Department of Health Sciences, Clinic of Infectious Diseases, ‘San Paolo’ Hospital, University of Milan, Milan, Italy
8. Institute of Infection & Global Health, University of Liverpool, Liverpool, UK
9. Department of Virology, Royal Free London NHS Foundation Trust, London, UK
10. Institute of Virology, University of Cologne, Cologne, Germany
11. Competence Network for HIV/AIDS, Bochum, Germany and Clinic for Dermatology, Venerology and Allergology of the Ruhr-Universität, Bochum, Germany
12. Clinical Trial Centre (ZKS), University of Cologne, Cologne, Germany
13. Laboratoire de Virologie, CHU de Bordeaux and MFP-UMR5234, Université Bordeaux 2, Bordeaux, France
14. Addiction Medicine, Service of Community Psychiatry, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
15. Department of Infectious Diseases, Bern University Hospital and University of Bern, Bern, Switzerland
16. Department of Virology, Bichat University Hospital, Paris, France