1. Department of Cardiology, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
2. Netherlands Heart Institute, Utrecht, the Netherlands
3. Department of Cardiology, Red Cross Hospital, Beverwijk, the Netherlands
4. Cardiology Centers of the Netherlands, Amsterdam, the Netherlands
5. Department of Surgery, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
6. FocusCura, Driebergen-Rijsenburg, the Netherlands
7. Department of Cardiology, Haga Teaching Hospital, The Hague, the Netherlands