1 Department of Cardiology, Radboud University Medical Center, Nijmegen, the Netherlands; Department of Cardiology, Maastricht University Medical Center, Maastricht, the Netherlands. Electronic address: rolandvank@hotmail.com.
2 Department of Cardiology, Radboud University Medical Center, Nijmegen, the Netherlands.
3 Department of Cardiology, Maastricht University Medical Center, Maastricht, the Netherlands.