1. Department of Cardiovascular Diseases (G.V., J.E., C.G., W.D., J.V.C., S.J.), University Hospitals Leuven, Belgium.
2. Department of Cardiovascular Sciences (J.E., J.V.C., P.V., S.J.), University Hospitals Leuven, Belgium.
3. Laboratory Medicine (N.P., P.V.), University Hospitals Leuven, Belgium.