[1] Univ Gottingen, Natl Reference Ctr Transmissible Spongiform Encep, Dept Neurol, D-37075 Gottingen, Germany
[2] Erasmus Univ, Dept Epidemiol & Biostat, Med Ctr Rotterdam, NL-3000 DR Rotterdam, Netherlands
[3] Inst Super Sanita, Dept Cellular Biol & Neurosci, I-00161 Rome, Italy
[4] CIBERNED, Santander, Spain
[5] Fdn Marques de Valdecilla, Inst Format & Res, Santander, Spain
[6] Res Base Slovak Med Univ, Natl Reference Ctr Prion Dis, Bratislava 83303, Slovakia
[7] Univ Edinburgh, Natl CJD Surveillance Unit, Edinburgh EH4 2XU, Midlothian, Scotland
[8] Inst Salud Carlos III, Ctr Nacl Microbiol, Madrid 28220, Spain
[9] Hosp Clin Prov Barcelona, Dept Neurol, Barcelona 08036, Spain
[10] Natl Reference Ctr Human Prion Dis NRPE, Inst Neuropathol, CH-8091 Zurich, Switzerland
[11] Aristotle Univ Thessaloniki, Pharmacol Lab, Dept Pharmaceut Sci, Sch Hlth Sci, Thessaloniki 54124, Greece
[12] Inst Psychiat & Neurol, Neurol Dept 1, PL-02957 Warsaw, Poland