1. Department of Intensive Care Medicine, University Hospitals Leuven, Leuven, Belgium.
2. Department of Clinical Physics, Southern General Hospital, Glasgow, United Kingdom.
3. Department of Perioperative Medicine and Intensive Care Medicine, San Gerardo Hospital, Monza, Italy.
4. Medical Physics, James Cook University Hospital, Middlesborough, United Kingdom.
5. Department of Neurosciences, Neurosurgery, Uppsala, Sweden.
6. Department of Neurosurgery, Antwerp University Hospital, Edegem, Belgium.
7. Department of Intensive Care Medicine, Antwerp University Hospital, Edegem, Belgium.
8. Klinik für Neurochirurgie, Universitätsklinikum Tübingen, Tübingen, Germany.
9. School of Mathematics and Statistics, University of Glasgow, Glasgow, United Kingdom.
10. Department of Clinical Physics and Bioengineering, NHS Greater Glasgow & Clyde, Glasgow, United Kingdom.
11. Department of Neurosurgery, University Hospitals Leuven, Leuven, Belgium.