1. Wellcome Trust Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle UniversityNewcastle upon Tyne United Kingdom
2. Department of RadiologyThe Newcastle upon Tyne Hospitals NHS Foundation Trust, Royal Victoria InfirmaryNewcastle upon Tyne United Kingdom
3. The Greater Manchester Neuroscience Centre, Salford Royal NHS Foundation TrustSalford United Kingdom
4. Department of NeurologyThe Leeds Teaching Hospitals NHS TrustWest Yorkshire United Kingdom
5. Department of GastroenterologyCounty Durham and Darlington NHS Foundation TrustDurham United Kingdom