1. Department for Neurology, University Hospital of Zurich, Switzerland (M.A.).
2. Department of Neurology, Oslo University Hospital, Norway (E.C.S.).
3. Department of Neurosciences, Hospital de Santa-Maria, University of Lisbon, Portugal (D.A.d.S.).
4. Department of Clinical Neurosciences, Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Canada (A.M.D.).