Chen, Daijuan
Xu, Jinfeng
Tian, Yuan
Ye, Pengfei
Zhao, Fumin
Liu, Xinghui
Wang, Xiaodong
Peng, Bing
Article History
Received: 2 February 2021
Accepted: 29 August 2021
First Online: 21 September 2021
Declarations
:
: The retrospective, observational study was approved by the Ethics Review Committee of West China Second University Hospital of Sichuan University, and because of the nature of the retrospective, observational setting for our study, and the data are anonymous, an informed consent was waived for all included patients by the Ethics Review Committee of West China Second University Hospital. All study methods of the retrospective study were conducted in accordance with relevant regulations of a protocol approved by the Institutional Review Board from the West China Second University Hospital of Sichuan University.
: Not applicable.
: The authors declare no competing interests.