| Institution: | 1. Department of Surgery, Brigham and Women''s Hospital, Boston, Massachusetts;2. Department of Medicine, Tufts Medical Center, Boston, Massachusetts;3. Minneapolis Heart Institute, Minneapolis, Minnesota;4. Department of Surgery, Penn State Hershey Heart and Vascular Institute, Hershey, Pennsylvania;5. Department of Surgery, Wexner Medical Center, Columbus, Ohio;6. Deparmtent of Medicine, University of Chicago Medicine, Chicago, Illinois;g. Department of Medicine, Northwestern Memorial Hospital, Chicago, Illinois;h. Department of Medicine, University of North Carolina Hospital, Chapel Hill, North Carolina;i. Department of Medicine, St. Vincent Hospital, Indianapolis, Indiana;j. Department of Surgery, Baylor University Medical Center, Dallas, Texas;k. Temple University, Philadelphia, Pennsylvania;l. Spectrum Health Systems, Grand Rapids, Michigan;m. Department of Medicine, Barnes-Jewish Hospital, St. Louis, Missouri;n. Department of Medicine, University Medical Center, Durham, North Carolina |
