He, Song-jian
Weng, Jian-xin
Chen, Hai-jun
Li, Hua-qiu
Guo, Wen-qin
Cao, Qian
Xu, Shuai
Yan, Hong-bing
Peng, Chang-nong
Article History
Received: 19 August 2020
Accepted: 10 January 2021
First Online: 28 January 2021
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committee of Fuwai Hospital Chinese Academy of Medical Sciences (SP2017016), and the need for informed consent was waived given the retrospective nature of the analysis.
: Not Applicable.
: The authors declare that they have no competing interests.