Geng, Aizhi
Luo, Lin
Ren, Fengyun
Zhang, Ling
Zhou, Haiying
Gao, Xue
Article History
Received: 8 December 2020
Accepted: 14 June 2021
First Online: 21 July 2021
Declarations
:
: This study has been approved by the Second People’s Hospital of Liaocheng Ethics Committee. Written informed consent was obtained from individual or guardian participants.
: Not applicable.
: The authors declare that they have no competing interests.