Funding for this research was provided by:
Chinese Academic of Medical Sciences Initiative for Innovative Medicine (CAMS-12M-1-010)
Beijing Municipal Science & Technology Commission (Z151100004015024)
Text and Data Mining valid from 2019-10-11
Received: 13 March 2019
Accepted: 20 September 2019
First Online: 11 October 2019
Ethics approval and consent to participate
: The study was approved by the ethics committee of National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College. All patients voluntarily signed an informed consent form.
: We have obtained consent from the participants to publish and report individual patient data.
: The authors declare that they have no competing interests.