1. Greater Manchester Neurosciences Centre, Salford Royal NHS Foundation Trust, Manchester, UK;
2. Division of Cardiovascular Sciences, The University of Manchester, Core Technology Facility, Manchester, UK;
3. Manchester Academic Health Science Centre, Centre for Biostatistics University of Manchester, Manchester, UK;
4. School of Nursing Midwifery & Social Work, Jean McFarlane Building University of Manchester, Manchester Academic Health Science Centre, Manchester, UK