Funding for this research was provided by:
National Natural Science Foundation of China (81560070)
Text and Data Mining valid from 2018-08-22
Received: 11 May 2018
Accepted: 17 July 2018
First Online: 22 August 2018
Ethics approval and consent to participate
: The research protocol was approved by the ethics committee or review committee of the First Affiliated Hospital of Xinjiang Medical University. Because the study was a retrospective cohort study based on real-world situations, there was no need to obtain informed consent from the patients.
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