Funding for this research was provided by:
National Natural Science Foundation of China (71661167005)
Key Research and Development Program of Sichuan Province (2018SZ0114, 2019YFS0271)
1·3·5 Project for Disciplines of Excellence–Clinical Research Incubation Project, West China Hospital, Sichuan University (2018HXFH023, ZYJC18013)
Article History
Received: 12 June 2020
Accepted: 30 November 2020
First Online: 14 December 2020
Ethics approval and consent to participate
: This study’s protocol was established according to the ethical guidelines of the Helsinki Declaration and was approved by the Human Ethics Committee of West China Hospital, Sichuan University (approval no. 2019–165). The Ethics Committee exempted informed consent because of the retrospective nature of this research. Prior to the analysis, patients’ data were anonymized and de-identified.
: Not applicable.
: The authors declare that they have no competing interests.