Funding for this research was provided by:
he Scientific Research Foundation for the Returned Overseas Chinese Scholars, Sun Yat-sen University Cancer Center (05010201)
the National Natural Science Foundation of China (81602137)
the Fundamental Research Funds for the Central Universities (17ykzd31)
Received: 14 February 2017
Accepted: 19 March 2018
First Online: 2 May 2018
Ethics approval and consent to participate
: The Ethics Committee of the Sun Yat-sen University Cancer Center approved all the tumor specimens used for this study. All the participating patients in this study have signed the informed consent forms.
: Not applicable.
: The authors declare that they have no competing interests.
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