1. Alzheimer Scotland Dementia Research Centre, University of Edinburgh, Edinburgh EH8 9JZ, UK
2. Department of Biomedical Engineering, University of Delaware, Newark, DE 19713, USA
3. Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA
4. Edinburgh Imaging Facility, School of Clinical Sciences, The Queen’s Medical Research Institute (QMRI), University of Edinburgh, Edinburgh EH16 4TJ, UK
5. Centre for Dementia Prevention at Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh EH16 4UX, UK