1. From the Duke Clinical Research Institute, Duke Medicine, Durham, NC (C.N.H., R.D.L., R.H., D.M.W., B.R.E., E.D.P., J.H.A.); Harvard Medical School, Harvard University, Boston, MA (C.M.G.); Baylor Health Care System, Baylor, TX (M.J.M.); Duke Translational Medicine Institute, Duke Medicine, Durham, NC (R.M.C.); and Missouri Baptist Medical Center, St. Louis, MO (N.T.K.).