Funding for this research was provided by:
National Natural Science Foundation of China (71373090)
Received: 2 March 2017
Accepted: 23 April 2018
First Online: 24 May 2018
Ethics approval and consent to participate
: The study was approved by the institutional review boards of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. Written informed consent was obtained from all subjects.
: The authors declare that they have no competing interests.
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