1. Cardiovascular Research Institute Maastricht, Maastricht University Medical Centre, Maastricht, The Netherlands
2. Synapse Research Institute, Maastricht, The Netherlands
3. Department of Clinical Chemistry and Hematology, Gelre Hospitals, Apeldoorn, The Netherlands
4. Department of Nephrology, Elisabeth-TweeSteden Hospital, Tilburg, The Netherlands
5. Department of Clinical Chemistry, Meander Medical Center, Amersfoort, The Netherlands
6. Department of Clinical Chemistry and Hematology, Elisabeth-TweeSteden Hospital, Tilburg, The Netherlands