1 Department of Medicine Columbia University College of Physicians and Surgeons New York, NY
2 Research Informatics XDx, Brisbane, CA
3 Department of Medicine, Division of Cardiology, Drexel University College of Medicine, Philadelphia, PA
This work was in part supported by XDx Inc. (M.C.D., H.J.E.), National Institutes of Health (M.C.D., H.J.E.), and World Heart Inc. (M.C.D., H.J.E.).
Alexander, Wolters, and Klingler work for XDx Inc. Shahzad, Cadeiras, Hicks, and Rowe do not report any financial conflicts of interest.
Address correspondence to: Mario C. Deng, M.D., F.A.C.C., F.E.S.C., Director of Cardiac Transplant Research, Columbia University College of P&S, PH12—Stem Room 134, 622 W 168th Street, New York, NY 10032; and Howard J. Eisen, M.D., F.A.C.C., Thomas V. Fischer Professor of Medicine, Division of Cardiology, Drexel University College of Medicine, 230 N Broad Street, 7th Fl, North Tower, Philadelphia, PA 19102.
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Received 12 October 2009.
Accepted 13 May 2010.