Funding for this research was provided by:
Li Ka Shing Foundation
National Natural Science Foundation of China (81200712, 81872334)
Received: 12 April 2018
Accepted: 8 August 2019
First Online: 20 August 2019
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the Cancer Hospital of Shantou University. All patients gave written informed consent for use of their samples and all patient data were de-identified for this study.
: Not applicable.
: The authors declare that they have no competing interests.