Funding for this research was provided by:
National Natural Science Foundation of China (61671445, 81672989)
Young Scientists Fund (31300301)
Science and Technology Support Program of Jiangsu Province (BE2016681)
Jiangsu Provincial Commission of Health and Family Planning (CN) (Q201601)
Text and Data Mining valid from 2019-08-28
Received: 24 March 2019
Accepted: 13 August 2019
First Online: 28 August 2019
Ethics approval and consent to participate
: All the procedures were approved by the Research Ethics Committee of Jiangsu Cancer Hospital and Institutional Review Boards of the Nanjing Medical University Affiliated Cancer Hospital, and the written informed consent was obtained from each participant. Our study was conducted according to the approved guidelines by the Hospital Ethics Committee.
: Not applicable
: The authors declare that they have no competing interests.