Funding for this research was provided by:
National Natural Science Foundation of China (81460120)
Text and Data Mining valid from 2019-01-15
Received: 10 April 2018
Accepted: 26 September 2018
First Online: 15 January 2019
Ethics approval and consent to participate
: Written informed consent was obtained from all participants. This study was approved by the Ethics Committee of Xinjiang Medical University, Urumqi, China. The reference number for ethics approval is 20141201-13. It was conducted according to the standards of the Declaration of Helsinki.
: Not applicable.
: The authors declare no conflict of interest.
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