1 Division of Cardiology, General Hospital Murska Sobota, Dr. Vrbnjaka 6, Murska Sobota SI-9000, Slovenia.
2 Faculty of Medicine, University of Ljubljana, Ljubljana SI-1000, Slovenia.
3 Faculty of Natural Sciences and Mathematics, University of Maribor, Maribor, Slovenia.
4 Berlin Institute of Health Center for Regenerative Therapies, Charite, Universitätsmedizin Berlin, Berlin, Germany.
5 Department of Cardiology (Virchow Klinikum), Charité - Universitätsmedizin Berlin, German Centre for Cardiovascular Research (DZHK), Partner Site Berlin, Berlin, Germany.
6 Department of Cardiology/Internal Medicine, Heart Center Leipzig-University Leipzig, Leipzig, Germany.
7 Dedinje Cardiovascular Institute, Belgrade, Serbia.
8 Faculty of Medicine, University of Belgrade, Belgrade, Serbia.