1. Department of Rehabilitation Medicine, Osborn Neurorehabilitation Unit, Sheffield Teaching Hospitals, Sheffield, UK;
2. Department of Neurosurgery, Sheffield Teaching Hospitals, Sheffield, UK;
3. UK Rehabilitation Outcomes Collaborative (UKROC), London, UK;
4. Department of Palliative Care, Policy and Rehabilitation, Faculty of Life Sciences and Medicine, King’s College London, London, UK