1 Faculty of Medicine, Jagiellonian University Medical College, Kraków, Poland
2 Krakow Center for Medical Research and Technologies, John Paul II Hospital, Kraków, Poland
3 Krakow Center for Medical Research and Technologies, John Paul II Hospital, Kraków, Poland; Institute of Cardiology, Jagiellonian University Medical College, Kraków, Poland. michal.zabczyk@uj.edu.pl