Acknowledgements
The authors gratefully acknowledge the UK Multiple Sclerosis Society and the National Multiple Sclerosis Society for their generous support of the authors’ work described in this article.
Financial & competing interests disclosure
The authors have no relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents received or pending, or royalties.
No writing assistance was utilized in the production of this manuscript.