[1] Univ Washington, Harborview Med Ctr, Sch Med, Dept Neurol, Seattle, WA 98104 USA
[2] Harvard Univ, Stat & Data Management Ctr, Boston, MA 02115 USA
[3] Washington Univ, Sch Med, Dept Neurol, St Louis, MO 63110 USA
[4] Univ Calif San Diego, Dept Med, San Diego, CA 92103 USA
[5] NYU, Dept Neurol, New York, NY 10016 USA
[6] Univ Calif San Diego, Dept Neurosci, San Diego, CA 92103 USA
[7] Case Western Reserve Univ, Dept Med, Cleveland, OH 44106 USA
[8] Univ Washington, Dept Med, Sch Med, Seattle, WA 98104 USA
[9] Univ Washington, Dept Lab Med, Sch Med, Seattle, WA 98104 USA
[10] Univ Rochester, Dept Neurol, Rochester, NY USA
[11] Univ Rochester, Dept Imaging Sci, Rochester, NY USA
[12] Johns Hopkins Univ, Dept Neurol, Baltimore, MD 21218 USA
[13] Johns Hopkins Univ, Dept Epidemiol, Baltimore, MD 21218 USA
[14] Johns Hopkins Univ, Dept Pathol, Baltimore, MD 21218 USA
[15] Univ N Carolina, Dept Neurol, Chapel Hill, NC USA