From Northwestern University Feinberg School of Medicine (L.K., M.G.), Chicago, Ill; Duke Clinical Research Institute (C.M.O., J.D.L., W.G.-S., G.M.F., R.M.C.), Durham, NC; Case Western Reserve University (I.L.P.), Cleveland, Ohio; and University of North Carolina (K.F.A.), Chapel Hill, NC.(2005-05-17時点)