Funding for this research was provided by:
National Natural Science Foundation of China (81401921)
Received: 14 December 2018
Accepted: 2 July 2019
First Online: 12 July 2019
Ethics approval and consent to participate
: This trial study was approved by the Ethics Committee of the Cancer Hospital of Harbin Medical University. The work related to medical ethics in this study was performed in compliance with the Helsinki Declaration and the International Ethical Guidelines for Biomedical Research Involving Human Subjects, promulgated by the International Committee of Medical Scientific Organizations. Harbin Tumor Hospital of Medical University is a teaching hospital. Each patient has signed an informed consent form for secondary use of medical history/biological specimen. All cell lines used in this study were purchased from the American Type Culture Collection. There were no cell lines that required ethics approval for their use.
: Not applicable
: The authors declare that they have no competing interests.