1. Department of Neurology, Inselspital University Hospital Bernand University of Bern, Switzerland
2. Department of Neurology & Stroke, and Hertie Institute for Clinical Brain Research, Eberhard-Karls University, Tuebingen, Germany
3. Department of Neurology, Christchurch Hospital, Christchurch, New Zealand
4. New Zealand Brain Research Institute, Christchurch, New Zealand
5. Department of Neurology, Heidelberg University Hospital, Germany