Funding for this research was provided by:
National Natural Science Foundation of China (81360448)
International Communication of Guangxi Medical University Graduate Education (2017)
Self-Raised Scientific Research Fund of the Health and Family Planning Commission of the Guangxi Zhuang Autonomous Region (Z2015198)
Nanning Scientific Research and Technology Development Project (20173018-3)
Received: 21 March 2020
Accepted: 8 June 2020
First Online: 15 June 2020
Ethics approval and consent to participate
: Since all datasets of COAD included in the present study were downloaded from The Cancer Genome Atlas (ExternalRef removed), and the data acquisition is open access to everyone. Therefore, additional approval by an Ethics Committee was not needed.
: Not applicable.
: The authors declare that they have no competing interests.