Fu, Meiting
Chen, Dexin
Luo, Fuzheng
Li, Mengshu
Wang, Yadong
Chen, Junsheng
Li, Aimin
Liu, Side
Article History
Received: 9 July 2019
Revised: 6 November 2019
Accepted: 13 November 2019
First Online: 2 December 2019
Ethics approval and consent to participate
: This study was approved by the institutional review board of Nanfang Hospital, Southern Medical University. The requirement of informed consent from the patients was waived because of the retrospective design of this study, and patients’ information was protected. All procedures performed in the study involving human participants were in accordance with the Declaration of Helsinki.
: Not applicable.
: All data sets generated and/or analysed during this study are available from the corresponding author on reasonable request.
: The authors declare no competing interests.
: This study was funded by grants from the National Natural Science Funds of China (No. 81772964), the Special Scientific Research Fund of Public Welfare Profession of National Health and Family Planning Commission (No. 201502026) and the Guangdong Gastrointestinal Disease Research Center (No. 2017B020209003).