1. Translational Brain Science, Institute of Metabolism and Systems Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
2. Department of Neurology, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital, Birmingham, UK
3. Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham, UK
4. Medical School, University of Dundee, Dundee, UK
5. Children's Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
6. Ophthalmology Department, Great Ormond Street Children’s Hospital, London, UK
7. Birmingham Neuro-Ophthalmology, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital, Birmingham, UK