1. Department of Biochemical Sciences, Pomeranian Medical University, 70-204 Szczecin, Poland
2. Pediatric Cardiology Department, Great Ormond Street Hospital, London WC1N 3JH, UK
3. InBioSens, 31-351 Krakow, Poland
4. Polish American Heart of Poland, 47-200 Kedzierzyn-Kozle, Poland
5. Division of Cardiology and Structural Heart Diseases, Medical University of Silesia, 40-635 Katowice, Poland
6. Cardiology Department, George Papanikolaou General Hospital, 570 10 Thessaloniki, Greece
7. Department of Gastroenterology, Pomeranian Medical University, 71-455 Szczecin, Poland
8. Department of Cardiac Surgery, Upper-Silesian Heart Center, 40-635 Katowice, Poland
9. Interventional Cardiac Electrophysiology Group, International Clinical Research Center, St. Anne’s University Hospital Brno, 602 00 Brno, Czech Republic