1. Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
2. McCance Center for Brain Health, Massachusetts General Hospital, Boston, Massachusetts, USA
3. Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts, USA
4. Department of Neurology, Harvard Medical School, Boston, Massachusetts, USA
5. Prion Alliance, Cambridge, Massachusetts, USA
6. Montana Veterinary Diagnostic Laboratory, Bozeman, Montana, USA
7. McLaughlin Research Institute, Great Falls, Montana, USA
8. Cervo Brain Research Center, Université Laval, Québec, Québec, Canada
9. Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
10. Institute for Neurodegenerative Diseases, University of California—San Francisco, San Francisco, California, USA