1. Department of Internal Medicine I – Cardiology University Hospital Olomouc Olomouc 775 20 Czech Republic
2. First Department of Medicine – Cardioangiology St. Anne's Faculty Hospital Brno Brno Czech Republic
3. Institute for Clinical and Experimental Medicine – IKEM Praha 4 Czech Republic
4. Na Homolce Hospital Prague 5 Czech Republic
5. Institute of Health Information and Statistics of the Czech Republic Praha 2 Czech Republic
6. Institute of Biostatistics and Analyses at the Faculty of Medicine of the Masaryk University (IBA FM MU) Brno Czech Republic
7. Department of Medicine II – Cardiology and Angiology The General Teaching Hospital in Prague Praha 2 Czech Republic