1. Department of Internal Medicine and Infectious Diseases, Erasmus MC, Rotterdam
2. Department of Internal Medicine and Infectious Diseases, OLVG Oost
3. Department of Internal Medicine and Infectious Diseases, Slotervaart MC, Amsterdam
4. Department of Internal Medicine and Infectious Diseases, MC Haaglanden, Den Haag
5. Department of Internal Medicine and Infectious Diseases, Elisabeth-TweeSteden Ziekenhuis, Tilburg
6. Department of Internal Medicine and Infectious Diseases, DC Klinieken, Amsterdam
7. Department of Internal Medicine and Infectious Diseases, Maastricht Universitair Medisch Centrum+
8. Department of Internal Medicine and Infectious Diseases, Rijnstate Ziekenhuis, Arnhem
9. Department of Internal Medicine and Infectious Diseases, Radboud Universitair Medisch Centrum, Nijmegen
10. Department of Internal Medicine and Infectious Diseases, MC Jan van Goyen, Amsterdam
11. Department of Internal Medicine and Infectious Diseases, Universitair Medisch Centrum Groningen
12. Department of Internal Medicine and Infectious Diseases, OLVG West, Amsterdam
13. Department of Internal Medicine and Infectious Diseases, Leids Universitair Medisch Centrum, Leiden
14. Department of Internal Medicine and Infectious Diseases, Medisch Spectrum Twente, Enschede
15. Department of Internal Medicine and Infectious Diseases, Isala Ziekenhuis, Zwolle
16. Department of Internal Medicine and Infectious Diseases, Spaarne Gasthuis, Haarlem
17. Department of Internal Medicine and Infectious Diseases, VU Medisch Centrum, Amsterdam
18. Department of Virology, Viroscience Lab, Erasmus MC, Rotterdam
19. Department of Internal Medicine and Infectious Diseases, Universitair Medisch Centrum Utrecht, the Netherlands