Funding for this research was provided by:
The Scientific and Technological plan of Beijing Municipal Commission of Science and Technology (Z181100001918026)
Received: 26 July 2018
Accepted: 15 November 2018
First Online: 26 November 2018
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of Xuanwu Hospital.
: The authors agree to publish.
: The authors declare that they have no competing interests.
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