1. From Georgia Institute of Technology, Atlanta (P.A.M., V.R., I.U.O., A.P.Y.); Cedars-Sinai Heart Institute, Los Angeles, CA (R.S., T.R., R.R.M.); Emory University, Atlanta, GA (J.F.C., G.K., V.H.T., V.B.); Exponent, Inc., Philadelphia, PA (I.U.O.); Atlanta Veterans Affairs Medical Center, Decatur, GA (G.K.); and New York University Langone Medical Center (H.J.).