1. Department of Neuropathology; University Medical Center; Georg August University; Göttingen Germany
2. Department of Health Sciences Research; Mayo Clinic; Rochester MN
3. Department of Anatomy and Cell Biology, and Cameco MS Neuroscience Research Center; University of Saskatchewan; Saskatoon Saskatchewan Canada
4. Center for Brain Research; Medical University of Vienna; Vienna Austria
5. Department of Neurosurgery; Medical University of Vienna; Vienna Austria
6. Neuropathology; Mayo Clinic; Rochester MN
7. Neurology; Mayo Clinic; Rochester MN