Yi, Xiaoping
Cao, Hang
Tang, Haiyun
Gong, Guanghui
Hu, Zhongliang
Liao, Weihua
Sun, Lunquan
Chen, Bihong T.
Li, Xuejun
Article History
Received: 21 December 2017
Revised: 15 February 2018
Accepted: 21 February 2018
First Online: 12 June 2018
Compliance with ethical standards
:
: The scientific guarantor of this publication is Professor Xuejun Li.
: The authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article.
: No complex statistical methods were necessary for this paper.
: Written informed consent was waived by the Institutional Review Board.
: Institutional Review Board approval was obtained.
: • retrospective• case-control study• performed at one institution