Jiang, Fenge
Wang, Congcong
Yang, Ping
Sun, Ping
Liu, Jiannan
Article History
Received: 27 June 2021
Accepted: 31 August 2021
First Online: 16 September 2021
Declarations
:
: This study was conducted in accordance with the Declaration of Helsinki and approved by the ethics committee of Yuhuangding Hospital Affliated to Qingdao University.
: Not applicable.
: The authors declare that they have no competing interests.