Funding for this research was provided by:
National Natural Science Foundation of China (81872499, 81602005, 81772476, 81702283)
National Key R&D Program of China (2016YFC0905500, 2016YFC0905503)
Science and Technology Program of Guangdong (2017B020227001)
Received: 24 January 2019
Accepted: 11 June 2019
First Online: 17 June 2019
Ethics approval and consent to participate
: The study was approved by the Institutional Review Board of SYSUCC and written informed consent was obtained for each patient prior to sample collection. Patients were informed that the resected specimens were stored by the hospital and potentially used for scientific research, and that their privacy would be maintained. Written consents were obtained from parents if patients were under 16 years old.
: Not applicable.
: The authors declare that they have no competing interests.