Funding for this research was provided by:
National Natural Science Foundation of China (81772625, 81772598)
Natural Science Foundation of Guangdong Province (2017A030311006)
Fundamental Research Funds for the Central Universities (18ykpy36)
Guangdong Key Laboratory of Liver Disease Research (GS2017101001)
Received: 27 February 2020
Accepted: 7 May 2020
First Online: 18 May 2020
Ethics approval and consent to participate
: Ethical approval was waived by the Sun Yat-sen University Cancer Centre in view of the retrospective nature of the study and all the procedures being performed were part of the routine care. This study was performed in accordance with the Helsinki Declaration of 1975.
: Not applicable.
: The authors declare that they have no competing interests.