Funding for this research was provided by:
the Key Laboratory of Diagnosis and Treatment of Digestive System Tumors of Zhejiang Province (2019E10020)
Ningbo Clinical Research Center for Digestive System Tumors (2019A21003)
Oncology Key Special Subject of Ningbo (2016-55)
Received: 4 July 2020
Accepted: 24 September 2020
First Online: 2 October 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of the HwaMei Hospital and the University of Chinese Academy of Sciences (approval NO. PJ-NBEY-KY-2019-153-01).
: Not applicable.
: The authors declare no conflict of interest.