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Authors
Cheng, Yuan
Xiao, Yinan
Zhou, Ruofan
Liao, Yi
Zhou, Jing
Ma, Xuelei http://orcid.org/0000-0002-9148-5001
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Article History
Received: 21 March 2019
Accepted: 20 August 2019
First Online: 28 August 2019
Ethics approval and consent to participate
: Approval for this retrospective research was obtained from the institutional review board of West China hospital, Sichuan University. Written informed consent was obtained from all included patients.
: Not applicable.
: The authors declare that they have no competing interests.
