Biykem Bozkurt1, Joseph A Hill2, Sana M Al-Khatib3. 1. Winters Center for Heart Failure Research, Cardiovascular Research Institute, Baylor College of Medicine, Michael E. DeBakey VA Medical Center, Houston, TX (B.B.). 2. Department of Internal Medicine, Cardiology Division, University of Texas Southwestern Medical Center, Dallas (J.A.H.). 3. Division of Cardiology and Duke Clinical Research Institute, Duke University Medical Center, Durham, NC (S.M.A.).