1. Erasmus University Medical Center and Cardiovascular Research Institute COEUR , Rotterdam , The Netherlands
2. Netherlands Heart Institute , Utrecht , The Netherlands
3. Department of Cardiology , Northwest Clinics , Alkmaar , The Netherlands
4. University Medical Center Utrecht , Utrecht , The Netherlands
5. University Medical Center Groningen , Groningen , The Netherlands
6. Zuyderland Hospital , Heerlen , The Netherlands
7. Maastricht University Medical Center , Maastricht , The Netherlands
8. Canisius-Wilhelmina Hospital , Nijmegen , The Netherlands
9. Working Group on Cardiovascular Research the Netherlands (WCN) , Utrecht , The Netherlands
10. Erasmus MC, Department of Cardiology , Room Na 342, PO Box 2040 , 3000 CA Rotterdam , The Netherlands