1. Spinal Cord Injury Center, Balgrist University Hospital, University of Zurich, Zurich, Switzerland.
2. Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Palo Alto, California, USA.
3. Spinal Cord Injury Center, BG Trauma Center Murnau, Murnau, Germany.
4. Department of Neurosurgery, Christian Doppler Clinic, Paracelsus Medical University, Salzburg, Austria.
5. Wellcome Trust Centre for Neuroimaging, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.
6. Department of Neurophysics, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany.