Article History
Received: 12 October 2020
Accepted: 9 March 2021
First Online: 3 April 2021
Declarations
:
: The authors have no conflicts of interest to declare that are relevant to the content of this article.
: This study was approved by the Ethics Committee of the Beijing Tongren Hospital.
: The need for informed consent was waived due to the retrospective nature of the study.