Funding for this research was provided by:
National Natural Science Foundation of China (81171727)
Article History
Received: 19 July 2018
Accepted: 11 October 2018
First Online: 6 November 2018
Ethics approval and consent to participate
: All procedures performed in this study involving human participants were approved by the Ethical Committee of Navy General Hospital and Changzheng Hospital, which followed the ethical standards of the institutional and national research committee and the 1964 Helsinki Declaration and its later amendments.Informed consent was obtained from all individual participants included in the study.
: Not applicable
: The authors declare that they have no competing interests.
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