Funding for this research was provided by:
local city-school cooperation project (NSMC20170418)
Youth innovation in medical research of Sichuan Province (Q15005)
Received: 24 January 2018
Accepted: 7 June 2018
First Online: 26 June 2018
Ethics approval and consent to participate
: Not applicable.
: Written informed consent was obtained from the individual patient described in this report. A copy of the written consent is available by request.
: The authors declare that they have no competing interests.
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