1. University Division of Anaesthesia, Department of Medicine, University of Cambridge, Cambridge, United Kingdom.
2. Division of Psychology, University of Stirling, Stirling, United Kingdom.
3. Department of Neurosurgery, Antwerp University Hospital, Edegem, Belgium.
4. Department of Neurosurgery, University of Antwerp, Edegem, Belgium (AIRM).
5. Department of Public Health, Erasmus MC University Medical Center, Rotterdam, the Netherlands.
6. Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, the Netherlands.