1 Anne Rowling Regenerative Neurology Clinic, University of Edinburgh, Chancellor's Building, 49 Little France Crescent, Edinburgh, UK.
2 Centre for Clinical Brain Sciences, University of Edinburgh, Chancellor's Building, 49 Little France Crescent, Edinburgh, EH16 4SB, UK.
3 Euan MacDonald Centre for Motor Neurone Disease Research, University of Edinburgh, Chancellor's Building, 49 Little France Crescent, Edinburgh, UK.
4 UK Dementia Research Institute, University of Edinburgh, Chancellor's Building, 49 Little France Crescent, Edinburgh, UK.
5 MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Crewe Road, Edinburgh, UK.
6 Department of Clinical Neurosciences, NHS Lothian, Edinburgh, UK.
7 Department of Neurology, NHS Greater Glasgow and Clyde, Glasgow, UK.
8 Department of Neurology, NHS Tayside, Dundee, UK.
9 Department of Neurology, NHS Highland, Inverness, UK.
10 Anne Rowling Regenerative Neurology Clinic, University of Edinburgh, Chancellor's Building, 49 Little France Crescent, Edinburgh, UK. suvankar.pal@ed.ac.uk.
11 Centre for Clinical Brain Sciences, University of Edinburgh, Chancellor's Building, 49 Little France Crescent, Edinburgh, EH16 4SB, UK. suvankar.pal@ed.ac.uk.
12 Euan MacDonald Centre for Motor Neurone Disease Research, University of Edinburgh, Chancellor's Building, 49 Little France Crescent, Edinburgh, UK. suvankar.pal@ed.ac.uk.
13 Department of Clinical Neurosciences, NHS Lothian, Edinburgh, UK. suvankar.pal@ed.ac.uk.
14 Department of Neurology, NHS Forth Valley, Larbert, UK. suvankar.pal@ed.ac.uk.