1 Department of Cardiology, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands.
2 Department of Cardiology, Thoraxcenter, Erasmus University Medical Center, Erasmus MC, Rotterdam, the Netherlands.
3 Department of Cardiology, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands; Department of Cardiology, Thoraxcenter, Erasmus University Medical Center, Erasmus MC, Rotterdam, the Netherlands.