Funding for this research was provided by:
Young Scientists Fund (81702251)
Shanghai Hospital Development Center (SHDC12016113)
Text and Data Mining valid from 2020-01-13
Received: 21 September 2019
Accepted: 2 January 2020
First Online: 13 January 2020
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Not applicable.
: The authors declare that they have no competing interests.