1. From the Division of Cardiology, Duke University, Durham, NC (J.G.R.); Duke Clinical Research Institute, Durham, NC (J.G.R.); Thoratec Corporation, Pleasanton, CA (R.R.B.); Quorum Consulting, Inc, San Francisco, CA (K.B.T.); Division of Cardiac Transplantation, Sharp Memorial Hospital, San Diego, CA (R.A.); Section of Cardiac and Thoracic Surgery, University of Chicago Medical Center, Chicago, IL (M.R.); Division of Thoracic and Cardiovascular Surgery, University of Louisville, Louisville, KY (M.S.S.).