1. Department of Cardiology, Thoraxcentrum Twente Medisch Spectrum Twente Enschede The Netherlands
2. Department of Health Technology and Services Research, Faculty BMS, Technical Medical Centre University of Twente Enschede The Netherlands
3. Department of Cardiology Rijnstate Hospital Arnhem The Netherlands
4. Department of Cardiology Haga Hospital The Hague The Netherlands
5. Department of Cardiology Albert Schweitzer Hospital Dordrecht The Netherlands
6. Department of Cardiology Hospital Group Twente Almelo and Hengelo The Netherlands