Funding for this research was provided by:
National Natural Science Foundation of China (81460509, 31460289)
Yunnan Provincial Science and Technology Project (2016RA014)
Natural Science Research Foundation of Kunming University of Science and Technology
Yunnan Provincial Innovation Team Project (2015HC030)
Text and Data Mining valid from 2018-05-08
Received: 3 January 2018
Accepted: 3 May 2018
First Online: 8 May 2018
Ethics approval and consent to participate
: All the participants were informed at enrolment and written consent was received before sample collection. The research was approved by the Institutional Ethical Committee of Kunming University of science and technology (NO.2014sk026). Consent was obtained from a parent or guardian on behalf of any participants under the age of 16.
: The authors declare that they have no competing interests.
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