1. Utah Transplantation Affiliated Hospitals (UTAH) Cardiac Transplant Program, Divisions of Cardiovascular Medicine and Cardiovascular Surgery; University of Utah Health Sciences Center; Salt Lake VA Medical Center; Intermountain Medical Center; Salt Lake City UT USA
2. Nora Eccles Harrison Cardiovascular Research and Training Institution (CVRTI); Salt Lake City UT USA
3. Department of Cardiology; National and Kapodistrian University of Athens; Athens Greece