1. Department of Cardiology, Na Homolce Hospital, Prague, Czech Republic
2. 2nd Department of Internal Medicine - Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
3. Department of Electrical & Computer Engineering and Iowa Institute for Biomedical Imaging, The University of Iowa, Iowa City, IA, USA
4. Institute for Research and Development of Education, Charles University in Prague, Prague, Czech Republic