1Massachusetts General Hospital, Boston, USA
2UCL Great Ormond Street Institute of Child Health, London, UK
3INSERM, Institut Cochin U1016, Paris, France
4Wellcome Trust Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, UK
5NIHR Biomedical Research Centre at Moorfields Eye Hospital, London, UK
6UCL, Institute of Ophthalmology, London, UK
7The Emmes Corporation, Rockville, USA
8Akron Children’s Hospital, Akron, USA
9Medical College of Wisconsin, Milwaukee USA
10Baylor College of Medicine, Houston, USA
11Children’s Hospital of Philadelphia, Philadelphia, USA
12University of Pennsylvania Perelman School of Medicine, Philadelphia, USA
13Children's Hospital Colorado, Aurora, USA
14Institute of Ophthalmology, University College London, London, UK
15Moorfields Eye Hospital, London, UK
16Department of Ophthalmology, University of California, San Francisco, USA
17Cleveland Clinic, Cleveland, USA
18Atlanta, USA
19McGill University, Montreal, USA
20McMaster University, Hamilton, Canada
21Hospital for Sick Children, University of Toronto, Toronto, Canada
22National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, USA
23Children’s Hospital of Pittsburgh, Pittsburgh, USA