Text and Data Mining valid from 2019-05-14
Received: 25 October 2018
Accepted: 29 April 2019
First Online: 14 May 2019
Ethics approval and consent to participate
: This study was conducted under the approval of the Institutional Review Boards of both the First Affiliated Hospital of Xi’an Jiaotong University. All participants were aware of the content of the study and signed an informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
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