Affiliation: | 1. Duke Clinical Research Institute, Duke University Medical Center, Durham, North Carolina, USA;2. Division of Cardiology, Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA;3. United Network for Organ Sharing, Richmond, Virginia, USA;4. Division of Cardiovascular & Thoracic Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina, USA;5. Department of Cardiovascular Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA;6. Department of Medicine, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden |