Ren, W. L.
Fan, Y. F.
Feng, J. W.
Zhong, Y. B.
Yu, J. B.
Ren, Z. M.
Liaw, P. K.
Article History
Received: 8 October 2015
Accepted: 7 January 2016
First Online: 5 February 2016
Change Date: 6 May 2016
Change Type: Update
Change Details: The version of this Article previously published omitted Y. B. Zhong as a corresponding author. Correspondence and request for materials should also be addressed to yunboz@staff.shu.edu.cn. This has now been corrected in the HTML and PDF versions of the Article.
Competing interests
: The authors declare no competing financial interests.