Funding for this research was provided by:
National Natural Science Foundation of China (81602578)
Natural Science Foundation of Shandong Province (ZR2017MH129)
China Pstdoctoral Science Foundation (2017M611177)
Medical Science and Technology Development Plans of Shandong (2015WS0152)
Received: 16 April 2020
Accepted: 7 September 2020
First Online: 15 October 2020
Ethics approval and consent to participate
: Ethical statement and ethics approval were obtained from the Institutional Review Board and the Human Ethics Committee of Shandong Cancer Hospital. Shandong First Medical University, and Shandong Academy of Medical Science. The approval number is "SDTHEC 20160627".
: Not applicable.
: The authors declare no competing interests.