1. Department of Clinical Chemistry, Canisius-Wilhelmina Hospital, Nijmegen, The Netherlands
2. Central Diagnostic Laboratory, Maastricht University Medical Centre +, Maastricht, The Netherlands
3. Clinical Laboratory, Maxima Medical Centre, Veldhoven, The Netherlands
4. Department of Clinical Chemistry, St. Antonius Hospital, Nieuwegein, The Netherlands
5. Department of Hematology, AmsterdamUMC Location VUMC, Amsterdam, The Netherlands
6. LabWest, Haga Teaching Hospital, The Hague, The Netherlands
7. Clinical Laboratory, Catharina Hospital, Eindhoven, The Netherlands
8. Department of Clinical Chemistry, OLVG Laboratoria BV, Amsterdam, The Netherlands
9. Department of Hematology, Erasmus University Medical Centre Rotterdam, Rotterdam, The Netherlands
10. Departmentof Clinical Chemistry, Certe, Groningen, The Netherlands
11. Department of Clinical Chemistry and Haematology, Rijnstate Hospital, Arnhem, The Netherlands
12. Department of Clinical Chemistry, Haematology & Immunology,Northwest Clinics, Alkmaar, The Netherlands
13. Department of Clinical Chemistry, Medlon, Location Medisch Spectrum Twente, Enschede, The Netherlands
14. Department of Clinical Chemistry, St. Anna Hospital, Geldrop, The Netherlands
15. Department of Clinical Chemistry, AmsterdamUMC Location AMC, Amsterdam, The Netherlands
16. Department of Clinical Chemistry, St. Elisabeth Hospital, Tilburg, The Netherlands