Funding for this research was provided by:
Haiyan Research Fund Youth Project, Harbin Medical University Cancer Hospital (JJQN2019-14)
Text and Data Mining valid from 2019-10-28
Received: 7 May 2019
Accepted: 2 October 2019
First Online: 28 October 2019
Ethics approval and consent to participate
: This article was approved by Ethics Committee of Harbin Medical University Cancer Hospital and was carried out in accordance with the World Medical Association Helsinki Declaration.Written informed consent was obtained from all participants and the study was conducted according to the bylaws of the institution. We abide by all ethical considerations and keep the patients’ personal information confidential.
: The authors declare that they have no competing interests.