1. From the Mitochondrial Research Group, Institute for Ageing and Health, The Medical School, Newcastle University, Newcastle-upon-Tyne, United Kingdom; the 2Department of Ophthalmology, Royal Victoria Infirmary, Newcastle upon Tyne, United Kingdom; and
2. St. John's Institute of Dermatology, Division of Genetics and Molecular Medicine, King's College London, London, United Kingdom.
3. From the Mitochondrial Research Group, Institute for Ageing and Health, The Medical School, Newcastle University, Newcastle-upon-Tyne, United Kingdom;