1. Wellcome Centre for Mitochondrial Research, Translational and Clinical Research Institute, Faculty of Medical Sciences Newcastle University Newcastle upon Tyne UK
2. National Health Service Highly Specialised Services for Rare Mitochondrial Disorders Newcastle upon Tyne Hospitals National Health Service Foundation Trust Newcastle upon Tyne UK
3. National Health Service Highly Specialised Services for Rare Mitochondrial Disorders Oxford University Hospitals National Health Service Foundation Trust Oxford UK
4. Birmingham Children's Hospital Birmingham UK