Duan, Na
Rao, Min
Chen, Xiao
Yin, Yanyun
Wang, Zhongqiu http://orcid.org/0000-0003-3722-6663
Chen, Rong
Article History
Received: 2 May 2019
Revised: 23 July 2019
Accepted: 27 August 2019
First Online: 18 October 2019
Compliance with ethical standards
:
: The scientific guarantor of this publication is Dr. Zhongqiu Wang.
: 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.
: Dr. Rong Chen provided statistical advice for this manuscript.
: Written informed consent was waived in this study.
: Institutional Review Board approval was obtained.
: • Retrospective study• Case-control study• Data from five institutions