Funding for this research was provided by:
Young Scientists Fund (71704037)
Text and Data Mining valid from 2020-04-10
Received: 5 December 2019
Accepted: 1 April 2020
First Online: 10 April 2020
Ethics approval and consent to participate
: The study obtained the consent of the ethics committee of Daqing campus of Harbin Medical University (Number: HMUDQ201911801), and written informed consent was obtained from each participant.
: Consent for publication has been obtained from patients to report individual patient data.
: The authors declare that they have no competing interests.