Funding for this research was provided by:
Natural Science Foundation of Anhui Province (1508085MH150)
Received: 11 June 2019
Accepted: 24 September 2019
First Online: 24 October 2019
: The authors declare that they have no competing interests.
: The study protocol was approved by the Ethics Committee of the First Affiliated Hospital of Anhui Medical University. 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