Funding for this research was provided by:
National Natural Science Foundation of China (30471976 and 81272620)
Science and technology projects of Guangdong Province (2016A020215086)
Received: 4 September 2019
Accepted: 27 July 2020
First Online: 5 August 2020
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Ethical committee of the Sun Yat-sen University Cancer Center and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.Written informed consent was obtained from all individual patients included in the study. This study was approved by the Ethical committee of the Sun Yat-sen University Cancer Center.
: Not applicable.
: Our work was funded by the following funds:1. National Natural Science Foundation of China, and the contract/grant number is 30471976 and 81272620.2. Science and technology projects of Guangdong Province, and the contract/grant number is 2016A020215086.One of the authors, Hua Wang, is a member of the editorial board of BMC Cancer.