Zhao, Xinju
Zhu, Li
Jin, Wenying
Yang, Bing
Wang, Yan
Ni, Mengfan
Zhao, Yuchao
Gan, Liangying
Zuo, Li
Article History
Received: 5 October 2021
Accepted: 10 February 2022
First Online: 16 February 2022
Declarations
:
: This study was conducted in accordance with the Declaration of Helsinki (as revised in 2013). The study was approved by the Ethics Committee of Peking University People’s Hospital (ethical approval number: 2019PHB203-01). As this study was a retrospective observational cohort study without any intervention, informed consent was exempted by the Ethics Committee of Peking University People’s Hospital (ethical approval number: 2019PHB203-01).
: Not applicable.
: The authors declare that they have no conflict of interest.