Funding for this research was provided by:
Foundation of Health Commission of Sichuan Province (19PJ061, 19PJ061)
Cooperative project of Nanchong City with North Sichuan Medical College (20SXQT0321, 20SXQT0321)
Received: 18 October 2021
Accepted: 20 July 2022
First Online: 25 July 2022
: The research article was approved by the ethics committee of Nanchong Central Hospital and was carried out in accordance with the 1975 Helsinki Declaration, Because of the anonymous nature of the data and the opt-out option disclosed on our institution's homepage, the requirement for additional informed consent to participate in this study was deemed unnecessary.
: Not applicable.
: The authors declare that they have no competing interests.