Ran, Chao
Sun, Jian
Qu, Yunhui
Long, Na
Article History
Received: 29 August 2021
Accepted: 13 November 2021
First Online: 9 December 2021
Declarations
:
: This study is approved by the ethics committee of Affiliated Yantai Yuhuangding Hospital of Qingdao University.
: Not applicable
: The authors declare that they have no competing interests.