1. Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK,
2. Euan MacDonald Centre for Motor Neurone Disease Research, University of Edinburgh, Edinburgh, UK,
3. Department of Neurology, NHS Lothian, Western General Hospital, Edinburgh, UK,
4. Department of Neurology, NHS Greater Glasgow & Clyde, Glasgow, UK,
5. Department of Neurology, NHS Highland, Inverness, UK,
6. Department of Neurology, NHS Tayside, Dundee, UK,
7. Department of Neurology, NHS Lanarkshire, Glasgow, UK,
8. Department of Neurology, NHS Orkney, Kirkwall, UK,
9. Department of Neurology, NHS Grampian, Aberdeen, UK,
10. Department of Neurology, NHS Ayrshire & Arran, Ayr, UK,
11. Department of Neurology, NHS Dumfries & Galloway, Dumfries, UK,
12. Department of Neurology, NHS Forth Valley, Stirling, UK,
13. Department of Neurology, NHS Borders, Melrose, UK,
14. Department of Neurology, NHS Western Isles, Stornoway, UK, and
15. Department of Neurology, NHS Shetland, Lerwick, UK