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Authors
Wang, Ru
Zhu, Yayun
Liu, Xiaoxu
Liao, Xiaoqin
He, Jianjun
Niu, Ligang https://orcid.org/0000-0003-3612-928X
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Article History
Received: 7 July 2019
Accepted: 30 October 2019
First Online: 12 November 2019
Ethics approval and consent to participate
: This study used previously collected de-identified data, the need for informed consent had been waived due to the retrospective nature of the study, and was deemed exempt from review by the Ethics Committee of the First Affiliated Hospital of Xi’an Jiaotong University.
: Not applicable.
: The authors declare that they have no competing interests.
