1 1st Department of Cardiology, Medical University of Warsaw, Banacha 1a, 02-097 Warsaw, Poland; Department of Medical Informatics and Telemedicine, Medical University of Warsaw, Banacha 1a, 02-097 Warsaw, Poland.
2 1st Department of Cardiology, Medical University of Warsaw, Banacha 1a, 02-097 Warsaw, Poland.
3 1st Department of Cardiology, Medical University of Warsaw, Banacha 1a, 02-097 Warsaw, Poland. Electronic address: marcin.grabowski@wum.edu.pl.