Funding for this research was provided by:
National Major Science and Technology Projects of China (2017ZX10202202)
Received: 24 July 2020
Accepted: 18 January 2021
First Online: 5 February 2021
Ethics approval and consent to participate
: The study was approved by Clinical Research Ethics Committee of the First Affiliated Hospital, College of Medicine, Zhejiang University, and the need for informed consent was waived. The data used in this study was anonymized before its use. The Health Commission of Zhejiang province granted permissions which were required to access the raw data used in this study.
: Not applicable.
: The authors declare that they have no competing interests.