1. Department of Medical Microbiology Radboud University Medical Center Nijmegen The Netherlands
2. Institute of Medical Virology University of Zurich Zurich Switzerland
3. Molecular Diagnostics Laboratory, Diagnostic and Research Institute of Hygiene, Microbiology, and Environmental Medicine Medical University of Graz Graz Austria
4. Clinical Institute of Medical and Laboratory Diagnostics Medical University of Graz Graz Austria
5. Institute of Clinical Chemistry University Hospital of Zurich, University of Zurich Zurich Switzerland
6. Department of Virology University Hospital of Rennes Rennes France