1. Institute of NeurologyMedical University of Vienna Vienna Austria
2. Austrian Reference Center for Human Prion DiseasesMedical University of Vienna Vienna Austria
3. Department of Neurology and Karl Landsteiner Institute for Neuroimmunological and Neurodegenerative DisordersDanube Hospital Vienna Austria
4. Neurological Tissue Bank, Biobanc Hospital Clinic, August Pi i Sunyer Biomedical Research Institute, and Pathology Department, Biomedical Diagnostic CenterBarcelona Hospital Clinic Barcelona Spain
5. Neuropathology and Prion Disease Reference Center, Department of Forensic and Insurance MedicineSemmelweis University Budapest Hungary