1. Department of Public and Global Health, Epidemiology, Biostatistics and Prevention Institute University of Zurich Zurich Switzerland
2. Division of Infectious Diseases and Hospital Epidemiology University Hospital of Zurich Zurich Switzerland
3. Division of Infectious Diseases and Hospital Epidemiology Cantonal Hospital St. Gallen St. Gallen Switzerland
4. Sigma Research, London School of Hygiene and Tropical Medicine London UK
5. Division of Infectious Diseases Regional Hospital Lugano Lugano Switzerland
6. Infectious Diseases and Internal Medicine Private Practice Geneva Switzerland
7. Laboratory of Virology and Division of Infectious Diseases Geneva University Hospital Geneva Switzerland
8. Infectious Diseases Service Lausanne University Hospital and University of Lausanne Lausanne Switzerland
9. Checkpoint Vaud Lausanne Switzerland
10. Private practice Kalkbreite Zurich Switzerland
11. Department of Infectious Diseases Bern University Hospital University of Bern Bern Switzerland
12. Dermatologic Centre Zurich Zurich Switzerland
13. Department of Infectious Diseases and Hospital Epidemiology University Hospital Basel University of Basel Basel Switzerland
14. Arud Centre for Addiction Medicine Zurich Switzerland
15. Kantonsspital Baselland, University of Basel Basel Switzerland
16. Positive Council Zurich Switzerland
17. Department of Epidemiology and Health Systems, Center for Primary Care and Public Health (Unisanté) University of Lausanne Lausanne Switzerland
18. Institute of Social and Preventive Medicine University of Bern Bern Switzerland
19. Swiss AIDS Federation Zurich Switzerland
20. Institute of Medical Virology University of Zurich Zurich Switzerland
21. Checkpoint Zurich Zurich Switzerland