1. Department of Neurology National Reference Center for CJD Surveillance Göttingen University Medical Center Göttingen Germany
2. Bellvitge Biomedical Research Institute Hospitalet de Llobregat Spain
3. Network Center for Biomedical Research in Neurodegenerative Diseases Carlos III Institute of Health Madrid Spain
4. German Center for Neurodegenerative Diseases, Göttingen campus Göttingen Germany