He, Wenyan
Zhang, Furong
Jiang, Feng
Liu, Huan
Wang, Gang
Article History
Received: 22 June 2022
Accepted: 7 November 2022
First Online: 25 November 2022
Declarations
:
: The protocol for this research project was approved by the ethics committee Yan’an People’s Hospital (No. PJ-2020-10). All methods were carried out in accordance with relevant guidelines and regulations. Informed consent was obtained from all patients. We certify that all applicable institutional and governmental regulations concerning the ethical use of human volunteers were followed during the course of this research.
: Not applicable.
: The authors declare that they have no conflict of interest.