Funding for this research was provided by:
National Natural Science Foundation of China (81622040, 31471328)
Received: 12 February 2021
Accepted: 7 May 2021
First Online: 31 May 2021
: This study was approved by the Ethics Committee of the First Affiliated Hospital of Dalian Medical University. All patients who underwent surgical resection have signed informed consent to our Hospital.
: Not applicable.
: All authors have no conflict of interest to declare.