Funding for this research was provided by:
Natural Science Foundation of Guangdong Province (2016A030313849)
Text and Data Mining valid from 2019-02-18
Received: 5 June 2018
Accepted: 1 February 2019
First Online: 18 February 2019
Ethics approval and consent to participate
: Ethical approval were obtained by the institutional review board of Sun Yat-sen University Cancer Center. All methods were carried out in accordance with the approved guidelines of our institute.
: 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.