1. Radiodiagnostic Clinic, University Hospital – Slovak Medical University and St. Michal Hospital, Bratislava, Slovakia, Europe,
2. Jesenius, Diagnostic Center, Nitra, Slovakia, Europe,
3. Institute of Diagnostic Imaging, Trnava, , Slovakia, Europe,
4. Department of Cardiology and Angiology, National Institute for Cardiovascular Diseases, Bratislava, Slovakia, Europe,