Funding for this research was provided by:
National Natural Science Foundation of China (81803015)
Natural Science Foundation of Shaanxi Province (2020JQ-505)
Fundamental Research Funds for the Central Universities (xjj2018092)
Received: 17 September 2020
Accepted: 11 December 2020
First Online: 6 January 2021
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Research Ethics Committee of The First Affiliated Hospital of Xi’an Jiaotong University and with the 1964 Helsinki declaration and its later amendments. All written informed consent to participate in the study was obtained from GBC patients for samples to be collected from them.
: Not applicable.
: The authors declare that they have no competing interests.