1. Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom.
2. Department of Chemistry, University of Cambridge, Cambridge, United Kingdom.
3. Division of Neurosurgery, Department of Clinical Neurosciences, University of Calgary, Calgary, Ontario, Canada.
4. MRC Mitochondrial Biology Unit, University of Cambridge, Cambridge, United Kingdom.
5. Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom.
6. Division of Anaesthesia, Department of Medicine, University of Cambridge, Cambridge, United Kingdom.