Funding for this research was provided by:
social development project of Shaanxi provincial science and Technology Department (2016YFJH2-06)
the program of Xi’an Municipal Science and Technology Bureau (SF1512-3)
Text and Data Mining valid from 2018-07-11
Received: 20 April 2018
Accepted: 3 July 2018
First Online: 11 July 2018
Ethics approval and consent to participate
: This study was approved by the Medical Ethics Committee of Honghui Hospital, and informed consent was obtained from all of the individual participants included in the study.
: Written informed consent for publication was obtained from all patients.
: The authors declare that they have no competing interests.
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