Funding for this research was provided by:
National Natural Science Foundation of China (81972244)
Text and Data Mining valid from 2020-02-05
Received: 12 October 2019
Accepted: 20 January 2020
First Online: 5 February 2020
Ethics approval and consent to participate
: The study protocol was approved by ethical committee of Fudan University Shanghai Cancer Center. All study participants provided their written consent for participation in the study.
: The consent to publish has been obtained from the participant to report individual patient data.
: The authors declare that they have no competing interests.