1. Centre for Health Systems and Safety Research, Australia Institute of Health Innovation, Macquarie University, North Ryde, NSW, Australia.
2. Queen Elizabeth National Spinal Injuries Unit, Queen Elizabeth University Hospital, Glasgow, United Kingdom.
3. Scottish Centre for Innovation in Spinal Cord Injury, Glasgow, United Kingdom.
4. Institute of Infection, Immunity, and Inflammation, University of Glasgow, Glasgow, United Kingdom.