Funding for this research was provided by:
National Natural Science Foundation of China (Grant No.81772272)
the CAMS Innovation Fund for Medical Science (Grant No. 2017-I2M-3-005)
Beijing Hope Run Special Fund of Cancer Foundation of China (LC2018B16)
Received: 3 June 2020
Accepted: 22 September 2020
First Online: 9 November 2020
Ethics approval and consent to participate
: The study was approved by the Ethics Committee at National Cancer Center/Cancer Hospital.
: Not applicable.
: The authors declare that they have no competing interests.