Rong, Lili
Wu, Xiaohu
Xu, Jun
Dong, Fengshou
Liu, Xingang
Zheng, Yongquan
Article History
Received: 18 August 2017
Accepted: 25 January 2018
First Online: 14 April 2018
Compliance with Ethical Standards
: This is an original research article that has neither been published previously nor considered presently for publication elsewhere.
: All authors named in the manuscript are entitled to the authorship and have approved the final version of the submitted manuscript. This article does not contain any studies with human or animal subjects.
: Lili Rong declares that she has no conflict of interest. Xiaohu Wu declares that he has no conflict of interest. Jun Xu declares that he has no conflict of interest. Fengshou Dong declares that he has no conflict of interest. Xingang Liu declares that he has no conflict of interest. Yongquan Zheng declares that he has no conflict of interest.