Funding for this research was provided by:
National Natural Science Foundation of China (81700584)
Discipline Promotion Project of Xijing Hospital (XJZT18ML16)
Received: 20 May 2020
Accepted: 20 July 2020
First Online: 28 July 2020
Ethics approval and consent to participate
: The local Institutional Review Board of the hospital approved this retrospective study and waived the requirement of informed consent for the use of patients’ medical data, and all experimental methods were performed in accordance with the relevant guidelines and regulations.
: Not applicable.
: The authors have declared that no interest.