Wang, Ting
Li, Fengjie
Geng, Wenwen
Ruan, Qingguo
Shi, Weiyun
Article History
Received: 28 February 2017
Accepted: 2 March 2017
First Online: 15 May 2017
Change Date: 21 August 2017
Change Type: Corrigendum
Change Details: A correction has been published for this paper. The error has been fixed in both the HTML and PDF versions of the paper.
Competing interests
: The authors declare no conflict of interest.