1 From Departments of Medicine (V.R.V., P.A.F., M.M., S.K., P.A.N., Y.-M.C., B.G., S.J.A., A.J.D.), Pediatric and Adolescent Medicine (S.J.A.), and Physiology and Biomedical Engineering (S.J.A.), and Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery (P.A.N.), Mayo Clinic, Rochester, MN; Department of Cardiovascular Heart and Circulation, Mount Sinai's St Luke Roosevelt Hospital Center, New York City, NY (S.A.); Leonard M. Miller School of Medicine, University of Miami, FL (N.P.); Department of Heart and Vascular (Cardiology), The Everett Clinic, WA (A.B.); Department of Internal Medicine, Saint Peter's University Hospital, New Brunswick, NJ (N.P., K.A.); Section of Neonatology, Department of Pediatrics, University of Washington, Seattle (Z.B.); and Stanford University School of Medicine, CA (M.P.T.).