**Author details**

Adrian C. Williams1 \* and Lisa J. Hill<sup>2</sup>

1 Department of Neurology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom

2 School of Biomedical Sciences, Institute of Clinical Sciences, University of Birmingham, United Kingdom

\*Address all correspondence to: adrian.williams1949@gmail.com

© 2021 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
