Zhang, Wanlin
Xiao, Xifeng
Zhang, Junyan
Wang, Wenjun
Wu, Jing
Peng, Ling
Wang, Xiaohong http://orcid.org/0000-0001-8925-5736
Article History
Received: 16 August 2017
Accepted: 28 March 2018
First Online: 7 June 2018
Compliance with ethical standards
:
: The authors declare that we have no conflict of interest.
: The authors agree to allow the Journal to review our data if requested.
: The authors declare that there are no ethical issues in this study due to no intervention was given to patients when performed a meta-analysis.