Received: 21 March 2022
Accepted: 18 July 2022
First Online: 29 July 2022
: All methods were carried out in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments. The study was approved by the Ethics Review Board of Shanxi Bethune Hospital (approval number: YXLL-KY-2021-005), and the requirement for informed consent was waived by the Ethics Committee because of the retrospective study design.
: Not applicable.
: The authors declare that they have no competing interests.