Funding for this research was provided by:
Natural Scientific Foundation of China (81473233, 81673463)
the Natural Scientific Foundation of China (81503092)
Text and Data Mining valid from 2019-05-09
Received: 30 January 2019
Accepted: 22 April 2019
First Online: 9 May 2019
Ethics approval and consent to participate
: We followed the guideline of the Sun Yat-sen University Cancer Center policy as described in Methods section.
: Not applicable.
: The authors declare that they have no competing interests
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