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Authors
Tan, Lei
Ye, Yunlin
Xiao, Kanghua
Xu, Xuelian
Liang, Haitao
Zheng, Fufu
Qin, Zike https://orcid.org/0000-0001-7346-0305
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Article History
Received: 28 December 2018
Accepted: 19 August 2019
First Online: 27 August 2019
Ethics approval and consent to participate
: Due to the retrospective nature of this study, ethics approval by Institutional Review Board of Sun Yat-sen University First Affiliated Hospital was obtained (No. 2016077) and the data were used confidentially for research work. Informed consent was written by every patient when they referred to hospital.
: Not applicable.
: The authors declare that they have no competing interests.
