[1] Univ Groningen, Med Ctr, Dept Cardiol, NL-9700 RB Groningen, Netherlands
[2] Univ Groningen, Med Ctr, Dept Thorac Surg, NL-9700 RB Groningen, Netherlands
[3] Erasmus MC, Dept Cardiol, Rotterdam, Netherlands
[4] Acad Med Ctr, Dept Cardiol, Amsterdam, Netherlands
[5] Radboud Univ Nijmegen, Med Ctr, Dept Cardiol, Nijmegen, Netherlands
[6] Leiden Univ, Med Ctr, Dept Cardiol, Leiden, Netherlands
[7] Univ Hosp Leuven, Louvain, Belgium