Funding for this research was provided by:
The National Key Research Program of China (2016YFC0904700)
National Natural Science Foundation of China (81703038)
Natural Science Foundation of Shandong Province (ZR2017PH006)
The Key Research Development Program of Shandong Province (2017GSF18102)
Received: 6 September 2018
Accepted: 25 February 2019
First Online: 5 March 2019
Ethics approval and consent to participate
: Approval was obtained from the institutional research ethics board of the Shandong Tumor Hospital Ethics Committee.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.