Funding for this research was provided by:
Xingtai City Science and Technology Plan (2020ZC340)
Received: 14 May 2021
Accepted: 11 July 2021
First Online: 19 July 2021
: This study was approved by the ethics committee of the General Hospital of Jizhong Energy Xingtai Mining Group. Informed consent was obtained from all the participants.
: Written informed consent was obtained from each patient to authorize the publication of their data.
: The authors declare that they have no competing interests.