1. From the Centre for Brain Repair and NIHR (National Institute for Health Research) Biomedical Research Centre, and the
2. Brain and Spinal Injury Center, Department of Neurological Surgery, University of California, San Francisco, California.
3. From the Centre for Brain Repair and NIHR (National Institute for Health Research) Biomedical Research Centre, and the3Department of Veterinary Medicine, University of Cambridge, Cambridge, United Kingdom; and the