1. Department of Cardiology, Academic Medical Center, Room B2-137, Meibergdreef 9, AZ Amsterdam, The Netherlands
2. Department of Cardiology, Leiden University Medical Center, Albinusdreef 2, ZA Leiden, The Netherlands
3. Department of Cardiothoracic Surgery, Academic Medical Center, Room B2-137, Meibergdreef 9, AZ Amsterdam, The Netherlands and Leiden University Medical Center, Albinusdreef 2, ZA Leiden, The Netherlands
4. Netherlands Heart Institute, Holland Heart House, Moreelsepark 1, EP Utrecht, The Netherlands