1. Spinal Cord Injury Center Balgrist University Hospital Zurich, University of Zurich Zurich Switzerland
2. Wellcome Centre for Human Neuroimaging, UCL Queen Square Institute of Neurology University College London London UK
3. Department of Neurophysics Max Planck Institute for Human Cognitive and Brain Sciences Leipzig Germany
4. Department of Brain Repair and Rehabilitation, UCL Institute of Neurology University College London London UK