Funding for this research was provided by:
Third Military Medical University (2012XLC02)
Text and Data Mining valid from 2020-03-19
Received: 12 November 2019
Accepted: 10 March 2020
First Online: 19 March 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. Study was approved by IRB of southwest hospital, Army Medical University, and IRB approval number was 2012XLC02.
: Not applicable.
: The authors declare that they have no competing interests.