**Author details**

Ghazwan Hasan1 \* and Oscar L. Alves2

1 Royal Private Hospital, Baghdad, Iraq

2 Department of Neurosurgery, Centro Hospitalar de Vila Nova de Gaia, Porto, Portugal

\*Address all correspondence to: dr.bayaty@gmail.com

© 2022 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.
