1. University Hospital Bergmannsheil, Ruhr University Bochum; Department of Neurology; Buerkle-de-la-Camp-Platz 1 Bochum Germany 44789
2. McMaster University; Department of Neurology and Rehabilitation; 1200 Main Street West Hamilton Ontario Canada L8N 3Z5
3. Kliniken Bergmannsheil, Ruhr University Bochum; Department of Neurology; Buerkle-de-la-Camp-Platz 1 Bochum Germany 44789