Gong, Chu-Lian
Hu, Jing-Ping
Qiu, Zhuo-Lin
Zhu, Qian-Qian
Hei, Zi-Qing
Zhou, Shao-Li
Li, Xiang http://orcid.org/0000-0002-9921-1646
Article History
Received: 25 April 2018
Accepted: 28 August 2018
First Online: 11 September 2018
Ethics approval and consent to participate
: The project was approved by the Research Ethics Committee of the Third Affiliated Hospital of Sun Yat-sen University (Ref: [2017] 2–216).Because of the retrospective and anonymous nature of this study, written informed consent was waived by the Research Ethics Committee of the Third Affiliated Hospital of Sun Yat-sen University.
: Not applicable.
: The authors declare that they have no competing interests.
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