**Author details**

Panagiotis Pardalidis1 , Nikolaos Andriopoulos2 and Nikolaos Pardalidis2 \*

1 Imperial School of Medicine, London, United Kingdom

2 Athens Medical Centre, Athens, Greece

\*Address all correspondence to: npardali@otenet.gr

© 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.
