1. Birmingham Neuro-Ophthalmology, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital, Birmingham, United Kingdom
2. Department of Metabolic Neurology, Institute of Metabolism and Systems Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
3. Department of Neurology, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital, Birmingham, United Kingdom
4. Birmingham Clinical Trials Unit, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
5. Health Economics Unit, Institute of Applied Health Research, University of Birmingham, Birmingham, United Kingdom
6. Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham, United Kingdom
7. Institute of Metabolism and Systems Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
8. Department of Neurology, Gloucestershire Hospitals NHS Foundation Trust, Gloucester, United Kingdom
9. Manchester University NHS Foundation Trust, Manchester Royal Eye Hospital, Manchester, United Kingdom
10. Department of Neurology, Royal Hallamshire Hospital, Sheffield, United Kingdom
11. Department of Ophthalmology, Royal Devon and Exeter NHS Foundation Trust, Exeter, United Kingdom
12. Nottingham Clinical Trials Unit, University of Nottingham, University Park, Nottingham, United Kingdom
13. Upper GI Unit and Minimally Invasive Unit, Birmingham Heartlands Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom
14. Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, United Kingdom
15. Department of Endocrinology, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital, Birmingham, United Kingdom
16. Cancer Research UK Clinical Trials Unit, University of Birmingham, Birmingham, United Kingdom