1. 1st Department of Cardiology, Medical University of Warsaw, Warsaw, Poland
2. Department of Epidemiology and Biostatistics, Medical University of Warsaw, Warsaw, Poland
3. Department of Medical Informatics and Telemedicine, Medical University of Warsaw, Warsaw, Poland
4. Liver and Internal Medicine Unit, Department of General, Transplant and Liver Surgery, Medical University of Warsaw, Warsaw, Poland
5. Department of General, Transplant, and Liver Surgery, Medical University of Warsaw, Warsaw, Poland