1. PZB Aachen, Medical Center for Infectious Diseases, Aachen, Germany
2. MVZmib AG, Medical Center for Infectious Diseases, Berlin, Germany
3. IIG-Institute of Immunology and Genetics, Kaiserslautern, Germany
4. Labor 28, Berlin, Germany
5. University of Cologne, Institute of Virology, Cologne, Germany
6. MVZ Labor Lademannbogen, Hamburg, Germany
7. Labor Enders, Laboratory for Medical Diagnostics, Stuttgart, Germany
8. Labor Krone, Laboratory for Medical Diagnostics, Bad Salzuflen, Germany
9. MUC Research, Munich, Germany