1 Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine, and Life Sciences, Maastricht University, Maastricht, the Netherlands.
2 Department of Cardiology, Rijnstate, Arnhem, the Netherlands.
3 Department of Cardiology, Radboud University Medical Center, Nijmegen, the Netherlands.
4 Institute of Pharmacology, West German Heart and Vascular Center, University Duisburg-Essen, Essen, Germany.