1. Department of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium (P.M., F.H.V., P.B.B., D.V., P.V., M.D., W.M.).
2. Doctoral School for Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium. (P.M.)
3. Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, OH (W.H.W.T.).
4. Department of Cardiology, University Hospital Leuven (UZ Leuven), Belgium (S.J.).
5. Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium. (W.M.)