1. Wellcome Centre for Mitochondrial Research, Institute of Genetic Medicine, Newcastle University, Newcastle upon Tyne NE1 3BZ, UK
2. Department of Cellular and Molecular Biology, School of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile
3. Medical Genetics Center, Munich, Germany
4. MRC Mitochondrial Biology Unit & Department of Clinical Neurosciences, University of Cambridge, Cambridge Biomedical Campus, Cambridge CB2 0QQ, UK
5. Department of General Pediatrics, Adolescent Medicine and Neonatology, Medical Center – University of Freiburg, Freiburg, Germany
6. Department of Neuropediatrics and Muscle Disorders, Faculty of Medicine, Medical Center – University of Freiburg, Freiburg, Germany