1. Dept. of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium.
2. Doctoral School for Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium.
3. Dept. of Laboratory Medicine, Ziekenhuis Oost-Limburg, Genk, Belgium.
4. Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium.
5. Dept. of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH, United States of America.