Wu, Qinqin
Qin, Ken
Wang, Youjuan
Nie, Hu
Funding for this research was provided by:
Sichuan Science and Technology Program (Grant No. 2017RZ0046, Grant No. 2018HH0099)
Sichuan Science and Technology Program (Grant No. 2018SZ0087)
Health Department of Sichuan Province (Grant No. Chuanganyan2012-111)
the Youth Teacher Research Startup Fund of Sichuan University (2016SCU11016)
Article History
Received: 28 June 2020
Accepted: 20 September 2021
First Online: 19 October 2021
Declarations
:
: This study was approved by the Ethics Committee of West China Hospital of Sichuan University. As this is a retrospective research, informed consent was not essential according to the Ethical Guidelines for Epidemiological Research. The study was allowed by the Ethics Committee of West China, Sichuan University.
: Not applicable.
: The authors declare no competing interests.