1 Department of Experimental Cardiology, Amsterdam University Medical Centres, location Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands.
2 Department of Cardiology, Rijnstate Hospital, Arnhem, The Netherlands. mhemels@rijnstate.nl.
3 Department of Cardiology, Radboud University Medical Centre, Nijmegen, The Netherlands. mhemels@rijnstate.nl.