1. Department of Neurology, University Hospital Erlangen, Germany (H.B.H., S.T.G., J.B.K., S.S.).
2. Department of Neurology, University Hospital Giessen, Germany (H.B.H.).
3. Department of Medicine, Dresden University Clinic Fetscherstr, Germany (J.B.-W.).
4. Population Health Research Institute, McMaster University, Canada (S.J.C., E.Z.).
5. Departments of Clinical Neurosciences (A.M.D.) and Radiology (A.M.D.), University of Calgary, Canada.
6. Department of Internal Medicine and Radboud Institute of Health Sciences, Radboud University Medical Center, Nijmegen, the Netherlands (S.M.).
7. Xcenda GmbH, Germany (J.A., F.A.).
8. Portola Pharmaceuticals, Inc (now Alexion, AstraZeneca Rare Disease), Boston, MA (M.J.C.).
9. Former employee of Portola Pharmaceuticals, Inc (now Alexion, AstraZeneca, Rare Disease), Boston, MA (P.Y., L.S.).