1. Thyroid Research Group, Cardiff University School of Medicine , Cardiff CF14 4XN , UK
2. Moorfields Eye Hospital NHS Foundation Trust , London, EC1V 2PD , UK
3. Bristol Medical School, University of Bristol , UK
4. Manchester Royal Eye Hospital , Manchester, M13 9WH , UK
5. Christie Hospital , Manchester, M20 4BX , UK
6. Bristol Haematology and Oncology Centre , Bristol, BS2 8ED , UK
7. Centre for Appearance Research, University of the West of England , Bristol, BS16 2JP , UK
8. Nuffield Department of Population Health, University of Oxford , Oxford OX3 7LF , UK
9. Institute of Ophthalmology, Faculty of Brain Sciences, University College London , London EC1V 9EL , UK