1. Radboud University Medical Centre, Donders Institute for Brain, Cognition and Behaviour, Dept. of Neurology; Nijmegen The Netherlands
2. Leiden University Medical Center, Department of Neurology; Leiden The Netherlands
3. Sun Life Financial Movement Disorders Research & Rehabilitation Centre; Department of Kinesiology & Physical Education; Wilfrid Laurier University; Waterloo Ontario Canada
4. University of Utah, Department of Physical Therapy; Salt Lake City Utah USA
5. KU Leuven, University of Leuven, Department of Rehabilitation Sciences; Leuven Belgium
6. 1st Faculty of Medicine and General University Hospital, Dept. of Neurology and Centre of Clinical Neuroscience; Charles University; Prague Czech Republic
7. Department of Neurological Services; Rush University School of Medicine; Chicago Illinois USA
8. Alzheimer Center Reina Sofia Foundation and CIBERNED; Carlos III Institute of Health; Madrid Spain
9. UCL Institute of Neurology; University College; London UK