1. National CJD Research and Surveillance Unit, Centre for Clinical Brain Sciences University of Edinburgh Edinburgh UK
2. Sorbonne Université, Institut du Cerveau—Paris Brain Institute, ICM, Inserm, CNRS, APHP, Hôpital de la Pitié Salpêtrière Paris France
3. Public Health Agency of Sweden Solna Sweden
4. Tzartos NeuroDiagnostics Athens Greece
5. Neurochemistry Laboratory—Translational Metabolic Laboratory, Department of Laboratory Medicine Radboud University Medical Centre Nijmegen The Netherlands
6. Laboratory of Neurology University of Antwerp Antwerp Belgium
7. Department of Neuroscience Istituto Superiore di Sanità Rome Italy
8. Laboratory of Neuropathology IRCCS Istituto delle Scienze Neurologiche Bologna Italy
9. Neuropathology Laboratory University of Verona Verona Italy
10. Division of Neuropathology and Neurochemistry, Department of Neurology Medical University of Vienna Vienna Austria
11. Institute of Neuropathology University Hospital of Zurich Zürich Switzerland
12. National Reference Center for Transmissible Spongiform Encephalopathies Göttingen Germany
13. Immunology Department, Biomedical Diagnostic Centre Hospital Clinic de Barcelona Barcelona Spain
14. Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) Barcelona Spain
15. Department of Experimental, Diagnostic, and Specialty Medicine (DIMES) University of Bologna Bologna Italy