Funding for this research was provided by:
Projects of International Cooperation and Exchanges NSFC (81420108021)
National Key Technology Support Program (2015BAI08B02)
Excellent Young Scholars NSFC (81622033)
Jiangsu Provincial Key Medical Center Foundation
Jiangsu Provincial Medical Talent Foundation and Jiangsu Provincial Medical Outstanding Talent Foundation
Text and Data Mining valid from 2020-01-31
Received: 23 January 2018
Accepted: 6 January 2020
First Online: 31 January 2020
Ethics approval and consent to participate
: No patients’ private information is involved. Therefore ethics approval is not needed from our Research Ethics Committee and consent for participation was waived. The corresponding author (QJ) who is head of our department granted permission to access the raw data.
: Not applicable.
: The authors declare that they have no competing interests.