1. Metabolic Neurology, Institute of Metabolism and Systems Research, University of Birmingham, Edgbaston B15 2TT, UK
2. Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham B15 2TH, UK
3. Department of Psychology, Nottingham Trent University, Nottingham NG1 5LT, UK
4. Department of Neurology, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TH, UK
5. Birmingham Clinical Trials Unit, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK
6. Birmingham Neuro-Ophthalmology Unit, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TH, UK
7. Institute of Metabolism and Systems Research, University of Birmingham, Birmingham B15 2TT, UK
8. Department of Endocrinology and Diabetes, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TH, UK
9. National Institute for Health Research (NIHR), Birmingham Biomedical Research Centre, University of Birmingham and University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 3GW, UK
10. Centre for Human Brain Health, School of Psychology, University of Birmingham, Birmingham B15 2TT, UK