Funding for this research was provided by:
National Natural Science Foundation of China (81000905, 81972638)
Natural Science Foundation of Hunan Province (14JJ4014)
Chinese Society of Clinical Oncology (Y-young2019-034)
Hunan Provincial Key Area R&D Program (2019SK2253)
Text and Data Mining valid from 2020-03-05
Received: 15 November 2019
Accepted: 11 February 2020
First Online: 5 March 2020
Ethics approval and consent to participate
: This study was approved by the Human Ethics Committee of the Second Xiangya Hospital, Central South University. Written informed consent was obtained from all patients.
: Not applicable.
: The authors declare that they have no competing interests.