1. Department of Rehabilitation and Sports Medicine, Second Faculty of Medicine Charles University in Prague and Motol University Hospital V Úvalu 84 Prague 5 150 06 Czech Republic
2. Children's Heart Centre, Second Faculty of Medicine Charles University in Prague and Motol University Hospital Prague Czech Republic
3. Department of Cardiovascular Surgery, Second Faculty of Medicine Charles University in Prague and Motol University Hospital Prague Czech Republic
4. Department of Physics, Faculty of Nuclear Sciences and Physical Engineering Czech Technical University in Prague Prague Czech Republic