Received: 17 March 2021
Accepted: 5 November 2021
First Online: 16 November 2021
: This study was approved by the institutional review boards/Ethics Committees of People’s Hospital of Ningxia Hui Autonomous Region, and was conducted in compliance with the ethical principles of the Helsinki Declaration of 1975. Written informed consent was obtained from the patients or their family members.
: Not applicable.
: No potential conflict of interest relevant to this article was reported.