Yin, Han
Xu, Duliang
Wang, Dawei
Article History
Received: 7 October 2020
Accepted: 19 February 2021
First Online: 6 March 2021
Declarations
:
: This study was approved by the ethics committee of Liaocheng People’s Hospital (201774) and was carried out in accordance with the Declaration of Helsinki. The participants provided written informed consent to participate in this research.
: The authors declare that they have no competing interests.