1. Department of Cardiology University Medical Center Groningen, University of Groningen Groningen The Netherlands
2. Department of Laboratory Medicine, Laboratory of Hematology Radboud University Medical Center Nijmegen The Netherlands
3. Department of Hematology University Medical Center Groningen, University of Groningen Groningen The Netherlands
4. Department of Internal Medicine University Medical Center Groningen, University of Groningen Groningen The Netherlands
5. Department of Cardiology, Division Heart & Lungs University Medical Center Utrecht, Utrecht University Utrecht The Netherlands
6. Department of Cardiology Erasmus MC Rotterdam The Netherlands