Funding for this research was provided by:
Science and Technology Funds from Liaoning Education Department (No. L:2015593)
National Science Foundation of China (81741074)
Article History
Received: 3 July 2018
Accepted: 24 September 2018
First Online: 19 October 2018
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of Shengjing Hospital of China Medical University (Shenyang, China) (No. 2016PS170K). Written informed consent was obtained from all the participants enrolled in our study or from their guardians.
: Not applicable.
: The authors declare that they have no competing interests.
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