1. Department of Cardiology, Kepler University Hospital , Krankenhausstraße 9 , 4020 Linz, Austria
2. Medical Faculty of the Johannes Kepler University Linz , Altenberger Straße 64, 4040 Linz , Austria
3. Institute of Clinical Pathology and Molecular Pathology, Kepler University Hospital , Linz , Austria
4. Department of Internal Medicine II, Paracelsus Medical University , Salzburg , Austria