Funding for this research was provided by:
Beijing Municipal Administration of Hospital Clinical Medical Development of Special Funding Support (XM201303)
National Natural Science Foundation of China (81672770)
Beijing Science and Technology Commission (Z151100001615022)
Received: 12 March 2018
Accepted: 31 August 2018
First Online: 24 September 2018
Ethics approval and consent to participate
: The Institutional Review Boards of the Peking University Cancer Hospital approved this study. All patients gave written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
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