1. Department of Molecular Genetics; Royal Devon and Exeter NHS Foundation Trust; Exeter UK
2. Department of Clinical Genetics; Royal Devon and Exeter NHS Foundation Trust; Exeter UK
3. Department of Ophthalmology; Royal Devon and Exeter NHS Foundation Trust; Exeter UK
4. Northern Genetics Service; Newcastle Hospitals NHS Foundation Trust; Newcastle upon Tyne UK
5. Institute of Biomedical and Clinical Science; University of Exeter Medical School; Exeter UK
6. Department of Diabetes and Endocrinology; Royal Devon and Exeter NHS Foundation Trust; Exeter UK