Funding for this research was provided by:
National Natural Science Foundation of China (81502468)
Provincial-ministerial Co-construction Project of Henan Province Science and Technology Key Point Tackling Plan (SB201901114)
Henan Provincial Scientific and Technological Project (182102310387, 162102310046)
Text and Data Mining valid from 2019-12-01
Received: 6 August 2019
Accepted: 19 November 2019
First Online: 3 December 2019
Ethics approval and consent to participate
: This study was approved by the Institute Ethical Committee of the Affiliated Cancer Hospital of Zhengzhou University, China. Written informed consents were obtained from all patients.
: Not applicable.
: The authors declare that they have no competing interests.