**Author details**

Gamal Shiha1,2 and Nasser Mousa3 \*

1 Internal Medicine Department, Mansoura University, Egypt

2 Egyptian Liver Research Institute and Hospital (ELRIH), El-Mansoura, Egypt

3 Tropical Medicine Department, Mansoura University, Egypt

\*Address all correspondence to: mousa\_medic@yahoo.com

© 2019 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.
