1. Department of Neurosurgery, Manchester Centre for Clinical Neuroscience, Manchester;
2. Geoffrey Jefferson Brain Research Centre, Manchester;
3. Division of Neuroscience and Experimental Psychology, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester;
4. Division of Cardiovascular Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, United Kingdom;
5. Departments of Neurologic Surgery and
6. Otolaryngology–Head and Neck Surgery, Mayo Clinic, Rochester, Minnesota;
7. University of Manchester;
8. School of Medicine, University of Liverpool;
9. Department of Otolaryngology, Salford Royal Hospital, Manchester;
10. Department of Otolaryngology, Manchester Royal Infirmary, Manchester;
11. Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester; and
12. Department of Neuroradiology, Manchester Centre for Clinical Neuroscience, Manchester, United Kingdom