Funding for this research was provided by:
National Natural Science Foundation of China (81971871, 81901941, 81772110)
Natural Science Foundation of Zhejiang Province (LY19H150007)
Received: 14 June 2020
Accepted: 22 October 2020
First Online: 6 November 2020
Ethics approval and consent to participate
: This study was approved by the Human Ethics Board of the Ethics Committee of the Second Affiliated Hospital of Zhejiang University Medical College (reference number 2019–191). We ensured that the patient data remained confidential and complied with the Declaration of Helsinki. Due to its retrospective nature, the Ethics Committee determined that patient consent was not required.
: Not applicable.
: The authors declare that they have no competing interests.