**Author details**

James Ronald Lawrence\*, Gwendoline Joan Baxter and John Robert Paterson† Research and Development Support Unit, Dumfries and Galloway Royal Infirmary, Cargenbridge, Dumfries, Scotland

\*Address all correspondence to: jim.lawrence@nhs.net

† Deceased.

© 2020 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.
