Pan, Chen-Wei
Wu, Rong-Kun
Li, Jun
Zhong, Hua
Funding for this research was provided by:
National Natural Science Foundation of China (81773449, 81560169)
Article History
Received: 9 March 2018
Accepted: 30 May 2018
First Online: 11 June 2018
Ethics approval and consent to participate
: Ethics committee approval was obtained from the Institutional Review Board of Kunming Medical University. We carried out the study according to the tenets of the Declaration of Helsinki involving human participants and the approved guidelines. Additionally, we obtained written informed consents from at least one parent or legal guardian of each participant.
: The authors declare that they have no competing interests.
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