Funding for this research was provided by:
Natural Science Foundation of Heilongjiang Province (H2017045)
National Natural Science Foundation of China (81672584)
Key Project for Petrel Foundation of Harbin Medical University Cancer Hospital (JJZD2020-07)
Received: 18 January 2020
Accepted: 14 May 2020
First Online: 24 May 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Review Board of Harbin Medical University Cancer Hospital and adhered to the principles of the Declaration of Helsinki and Title 45, U.S. Code of Federal Regulations, Part 46, Protection of Human Subjects, effective December 13, 2001.
: All authors approved publication of the manuscript.
: The authors declare that they have no competing interests.