**Author details**

Qin-Qin Long† , Xiao-Qin Wu† and Jin-Guang Yao\* Department of Pathology, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China

\*Address all correspondence to: yyyaojg001@163.com

† These authors contributed equally to this work.

© 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.
