Funding for this research was provided by:
National Natural Science Foundation of China (81660555)
Received: 5 April 2017
Accepted: 9 January 2018
First Online: 25 January 2018
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the First Affiliated Hospital of Nanchang University (Approved number: 2,015,018). We confirmed that all informed consent were obtained from all participants, and all information was anonymized, and no individual information can be identified.
: No applicable.
: All contributing authors declare no competing interests.
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