1. Institute of Clinical Chemistry and Clinical Pharmacology University Hospital Bonn Bonn Germany
2. Mildred Scheel School of Oncology Bonn Germany
3. University Hospital Bonn Medical Faculty Bonn Germany
4. Institute of Virology University Hospital Bonn Bonn Germany
5. Institute for Hygiene and Public Health University Hospital Bonn Bonn Germany
6. Institute for Experimental Immunology Affiliated to EUROIMMUN Medizinische Labordiagnostika AG Lübeck Germany