1 Department of Cardiology, St Antonius Hospital, Nieuwegein, the Netherlands; Department of Cardiology, University Medical Center Maastricht, Maastricht University Center and Cardiovascular Research Institute Maastricht (CARIM), Maastricht, the Netherlands. Electronic address: jurtenberg@gmail.com.
2 Department of Cardiology, St Antonius Hospital, Nieuwegein, the Netherlands.