Funding for this research was provided by:
the Research Project of Jiangsu Provincial Health and Family Planning Commission (H201662)
the Program of Jiangsu Provincial Youth Medical Talents (QNRC2016356)
Text and Data Mining valid from 2018-07-20
Received: 19 April 2018
Accepted: 6 July 2018
First Online: 20 July 2018
Ethics approval and consent to participate
: All procedures performed in the studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee. The study was approved by the Local Ethics Committee of the Affiliated Hospital of Yangzhou University (Yangzhou, PR China), and the reference number of the Ethics Committee is YDEC2017-194.
: Not applicable.
: The authors declare that they have no competing interests.
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