**Author details**

Gyula Mózsik1 \* and Gonzalo Diaz Soto2

1 First Department of Medicine, University of Pécs, Hungary

2 University of Valladolid, Spain

\*Address all correspondence to: gyula.mozsik@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.
