1. From the Duke Clinical Research Institute, Durham, NC (A.B., J.G.J., S.A.P., C.B.G., M.T.R.); University of Vermont, Burlington, VT (H.L.D.); University of California at Los Angeles–Olive View Medical Center, Geffen School of Medicine, Sylmar, CA (I.C.R.); University of Michigan, Ann Arbor, MI (E.R.B.); and Harbor–University of California at Los Angeles Medical Center, Torrance, CA (W.J.F.).