1. Department of Cardiology, Sisters of Charity University Hospital Centre, 10000 Zagreb, Croatia
2. Department of Medicine, Sisters of Charity University Hospital Centre, 10000 Zagreb, Croatia
3. School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
4. Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, 8010 Graz, Austria
5. Institute for Medical Informatics, Statistics and Documentation, Medical University of Graz, 8036 Graz, Austria
6. BioTechMed-Graz, 8010 Graz, Austria