Wu, Baolin
Zhou, Jun
Ling, Gonghao
Zhu, Dongyong
Long, Qingyun
Article History
Received: 3 November 2017
Accepted: 16 March 2018
First Online: 27 March 2018
Ethics approval and consent to participate
: The institutional review board of the Zhongnan Hospital of Wuhan University approved this retrospective study and waived the requirement for patient informed consent.
: Not applicable
: This manuscript contains original material that has not been published or submitted to any other journal. The authors declare that they have no competing interests.
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