1 Division of Cardiovascular Medicine, University of Utah Health and School of Medicine, Salt Lake City, UT, USA; Heart Failure and Transplant Unit, Onassis Cardiac Surgery Center, Athens, Greece.
2 Heart Failure and Transplant Unit, Onassis Cardiac Surgery Center, Athens, Greece.
3 Division of Cardiovascular Medicine, University of Utah Health and School of Medicine, Salt Lake City, UT, USA; 3(rd) Department of Cardiology, National Kapodestrian University of Athens, School of Medicine, Athens, Greece. Electronic address: stavros.drakos@hsc.utah.edu.