Xiao, Juan
Yun, Canhua
Cao, Jingjia
Ding, Shouluan
Shao, Chunchun
Wang, Lina
Huang, Fengyan
Jia, Hongying
Funding for this research was provided by:
Youth Fund of the Second Hospital of Shandong University (2018YT42)
Key Projects of Educational and Teaching Reform of Shandong University (2019Z10)
Article History
Received: 13 May 2020
Accepted: 29 October 2020
First Online: 14 January 2021
Competing interests
: The authors declare no competing interests.