| Roger D Kouyos | Department of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich |
| Roger D Kouyos | Institute of Medical Virology, University of Zurich |
| Roger D Kouyos | Department of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich |
| Roger D Kouyos | Institute of Medical Virology, University of Zurich |
| Matthias Cavassini | University Hospital Lausanne |
| Matthias Cavassini | University Hospital Lausanne |