[1] Univ Vienna, Inst Neurol, A-1090 Vienna, Austria
[2] Univ Calif San Diego, Dept Pathol, La Jolla, CA 92093 USA
[3] Univ Zurich Hosp, Dept Pathol, CH-8091 Zurich, Switzerland
[4] Auguste Viktoria Krankenhaus, Dept Pathol, D-1000 Berlin 41, Germany
[5] Hosp Univ Penn, Dept Neurol, Philadelphia, PA 19104 USA
[6] Univ Med & Dent New Jersey, New Jersey Med Sch, Dept Pathol, Newark, NJ 07103 USA
[7] Johns Hopkins Univ, Dept Neurol & Neurosci, Baltimore, MD 21205 USA
[8] Northwestern Univ, Div Neuropathol, Chicago, IL 60610 USA
[9] Univ Massachusetts, Med Ctr, Dept Pathol Neuropathol, Worcester, MA 01655 USA
[10] Yeshiva Univ Albert Einstein Coll Med, Dept Pathol, Bronx, NY 10461 USA
[11] Univ Rochester, Med Ctr, Dept Neurol, Rochester, NY 14642 USA
[12] Univ Oxford, Radcliffe Infirm, Dept Neuropathol, Oxford OX2 6HE, England
[13] Univ Bologna, Osped Bellaria, Inst Pathol Anat & Histol, I-40139 Bologna, Italy
[14] Free Univ Berlin, Inst Neuropathol, D-1000 Berlin 45, Germany
[15] Hop Henri Mondor, Dept Pathol Neuropathol, F-94010 Creteil, France
[16] Hop Beaujon, Serv Pathol Anat & Cytol, F-92118 Clichy, France
[17] Tohoku Univ, Dept Neurol Sci, Sendai, Miyagi 980, Japan
[18] Ctr Dis Control, Dept Hlth & Human Serv, Atlanta, GA 30333 USA
[19] Univ London, Inst Psychiat, Dept Neuropathol, London SE5 8AF, England
[20] Hokkaido Univ, Dept Pathol, Sapporo, Hokkaido 060, Japan
[21] SUNY Stony Brook, Univ Hosp, Dept Pathol, Stony Brook, NY 11794 USA
[22] New York Hosp, Cornell Med Ctr, Dept Pathol, New York, NY 10021 USA
[23] Univ Minnesota, Dept Neurol, Minneapolis, MN 55455 USA
[24] Metrohlth Med Ctr, Div Neuropathol, Dept Pathol, Cleveland, OH 44109 USA
[25] Mem Sloan Kettering Canc Ctr, Dept Pathol, New York, NY 10021 USA
[26] Hop Bicetre, Serv Neurol, F-94275 Le Kremlin Bicetre, France
[27] Natl Hosp, Inst Neurol, Dept Neuropathol, London WC1N 3BG, England
[28] Univ Calif Los Angeles, Dept Pathol, Los Angeles, CA 90024 USA