Bai, Yu
Guo, Yiqun
Gu, Li
Article History
Received: 8 July 2022
Accepted: 12 December 2022
First Online: 16 January 2023
Declarations
:
: The study was approved by the Institutional Review Board of Beijing Chao-Yang Hospital (2015-KE-158). As the anonymized data in the current retrospective study was used, a waiver of informed consent was included in the approval from the Institutional Review Board of Beijing Chao-Yang Hospital. All methods in this study were carried out in accordance with relevant guidelines and regulations (declarations of Helsinki).
: Not applicable.
: All authors declare no conflict of interest.