1. Department of Neurology and Neuromuscular Research Unit; University of Copenhagen; Rigshospitalet; Copenhagen Denmark
2. Department of Ophthalmology; Glostrup Hospital; Glostrup Denmark
3. Department of Cardiology; The Heart Centre; University of Copenhagen; Rigshospitalet; Copenhagen Denmark
4. Clinical Genetics; University of Copenhagen; Rigshospitalet; Copenhagen Denmark
5. Singapore National Eye Centre; Singapore Eye Research Institute and Duke-NUS; Singapore City Singapore