Funding for this research was provided by:
Beijing hope run special fund of cancer foundation of China (LC2009A05)
Chinese Academy of Medical Sciences (CAMS) Initiative for Innovative Medicine ((Grant No. 2016-I2M-1-007, Grant No. 2016-I2M-1-001)
Received: 14 August 2018
Accepted: 7 February 2019
First Online: 13 February 2019
Ethics approval and consent to participate
: The research study was reviewed and approved by the Domain-Specific Review Board, Cancer Hospital Chinese Academy of Medical Sciences, with waiver for informed patient consent. Patient details were anonymized before analysis.
: Patient study consent was not required due to the study’s retrospective nature.
: The authors declare no conflicts of interests.
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