1. 1 Department of Neurology, Friedrich-Baur-Institute, Ludwig-Maximilians-University, Munich, Germany
2. 2 Department of Neurology, Royal Victoria Infirmary, Newcastle upon Tyne Foundation Hospital, NE1 4LP, NHS Trust, UK
3. 3 Department of Ophthalmology, Royal Victoria Infirmary, Newcastle upon Tyne Foundation Hospital, NE1 4LP NHS Trust, UK
4. 4 Mitochondrial Research Group, Institute of Genetic Medicine, Newcastle University, Central Parkway, Newcastle upon Tyne, NE1 3BZ, UK
5. 5 Ophthalmology Department, Centre Hospitalier de l'Université de Montréal (CHUM), Montreal, Quebec H2L 4M1, Canada
6. 6 Department of Ophthalmology, Ludwig-Maximilians-University, Munich, 80336 Germany
7. 7 Santhera Pharmaceuticals, 4410 Liestal, Switzerland
8. 8 4Pharma, Stockholm, 16440 Kista, Sweden