Funding for this research was provided by:
National Natural Science Foundation of China (81572403, 81372887)
Text and Data Mining valid from 2018-10-03
Received: 20 September 2017
Accepted: 25 September 2018
First Online: 3 October 2018
Ethics approval and consent to participate
: This study was approved by the institutional ethical review board of Sun Yat-sen University Cancer Center. Each author certifies that all investigations were conducted in conformity with the ethical principles. Written informed consent was obtained from all patients or guardians (for minors) included in the study.
: Not applicable.
: The authors declare that they have no competing interest.
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