Funding for this research was provided by:
National Natural Science Foundation of China (81772910)
Text and Data Mining valid from 2020-01-04
Received: 23 August 2019
Accepted: 20 December 2019
First Online: 4 January 2020
Ethics approval and consent to participate
: This study was approved by the institutional review board of Sun Yat-sen University Cancer Center and was also conducted in accordance with the Declaration of Helsinki and all patients signed the informed consent.
: Not applicable.
: The authors declare that they have no competing interests.