**Author details**

Xue Xiao1 \* and Zhou Wang2

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

2 Department of Geriatric Cardiology, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, China

\*Address all correspondence to: pearxiaoxue@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.
