Funding for this research was provided by:
National Natural Science Foundation of China (81602112, 81672405, 81572407)
Guangdong Science and Technology Department (2015A030313096, 2016A030313184)
Natural Science Foundation of Jilin Province (4250016043)
Key project of Natural Science Foundation of Guangdong Province, China (4210016041)
Received: 14 November 2018
Accepted: 29 May 2019
First Online: 10 June 2019
Ethics approval and consent to participate
: The data obtained in this study were rooted mainly in the public SEER database, which is available as open-access data. The ethics committee board of Sun Yat-sen Memorial Hospital, Sun Yat-sen University, approved the use of patients with early colon carcinoma for this study.
: Not applicable.
: The authors declare that they have no competing interests.