Zhang, Liulu
Huang, Yijie
Yang, Ciqiu
Zhu, Teng
Lin, Yufeng
Gao, Hongfei
Yang, Mei
Cheng, Minyi
Wang, Kun
Article History
Received: 28 March 2018
Accepted: 7 June 2018
First Online: 19 June 2018
Ethics approval and consent to participate
: The Ethics Committee of Guangdong General Hospital approved the study. The informed consent was waived because this is a retrospective study.
: The authors declare that they have no competing interests.
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