**Author details**

Tingting Huang1,2, Zhe Zhang3 and Xiaoying Zhou4 \*

1 Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden

2 Department of Radiation Oncology, First Affiliated Hospital of Guangxi Medical University, Nanning, China

3 Department of Otolaryngology-Head and Neck Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, China

4 Life Science Institute, Guangxi Medical University, Nanning, China

\*Address all correspondence to: zhouxiaoying1982@foxmail.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.
