Funding for this research was provided by:
National Natural Science Foundation of China (81971687, 61731009)
Shanghai Sailing Program (19YF1409900)
Received: 22 September 2019
Accepted: 8 January 2020
First Online: 30 January 2020
Ethics approval and consent to participate
: Our Institutional Review Board (Fudan University Shanghai Cancer Center Medical Ethics Committee) approved this study and waived the need for informed consent from patients.
: All authors have read and approved the content and agree to submit for consideration for publication in the journal.
: The authors declare that they have no competing interests.