1 From the Duke Clinical Research Institute, Durham, NC (E.C.O, Y.X., A.F.H); UCLA Department of Medicine, Los Angeles, CA (G.C.F.); University of Texas Southwestern Medical Center, Dallas (D.M.O.); and Harvard Medical School, Boston, MA (L.H.S.). emily.obrien@duke.edu.
2 From the Duke Clinical Research Institute, Durham, NC (E.C.O, Y.X., A.F.H); UCLA Department of Medicine, Los Angeles, CA (G.C.F.); University of Texas Southwestern Medical Center, Dallas (D.M.O.); and Harvard Medical School, Boston, MA (L.H.S.).