Funding for this research was provided by:
Beijing Municipal Administration of Hospitals’ Youth Program (QML20170507)
Cooperative Basic-Clinical Research Program (17JL67)
Article History
Received: 20 March 2019
Accepted: 5 June 2019
First Online: 18 June 2019
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.