Sun, Jianjun
Sun, Weiwei
Tang, Yang
Zhang, Renfang
Liu, Li
Shen, Yinzhong
Wang, Jiangrong
Chen, Jun
Qi, Tangkai
Wang, Zhenyan
Song, Wei
Lin, Yixiao
Xu, Shuibao
Lu, Hongzhou
Article History
Received: 5 January 2021
Accepted: 24 May 2021
First Online: 1 June 2021
Declarations
:
: Ethical approval was granted by the Ethics Committee of Shanghai Public Health Clinical Center (Ethics approval No. 2017-S022–04). This study used retrospective and anonymous data collection methods, which did not involve patient privacy, so informed consent was exempted from ethical review.
: Not applicable.
: The authors declare that they have no competing interests.