[1] NINCDS, NEUROPATHOL & NEUROANAT SCI LAB, BETHESDA, MD 20205 USA
[2] NINCDS, DEV & METAB NEUROL BRANCH, BETHESDA, MD 20205 USA
[3] MASSACHUSETTS GEN HOSP, CHARLES S KUBIK LAB NEUROPATHOL, BOSTON, MA 02114 USA
[4] UNIV WISCONSIN, SCH MED, DEPT MED MICROBIOL, MADISON, WI 53706 USA