Affiliation: | ? Duke Clinical Research Institute, Duke University Medical Center, Durham, North Carolina;† Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina;‡ Division of Cardiology, Department of Medicine, Duke University Medical Center, Durham, North Carolina;§ Department of Cardiothoracic Surgery, Falk Cardiovascular Research Center, Stanford University School of Medicine, Stanford, California;∥ Clinical Research Unit, Division of Cardiothoracic Surgery, Emory University School of Medicine, Atlanta, Georgia |