Zhang, Feng
Hou, Peng-Xiang
Liu, Chang
Wang, Bing-Wei
Jiang, Hua
Chen, Mao-Lin
Sun, Dong-Ming
Li, Jin-Cheng
Cong, Hong-Tao
Kauppinen, Esko I.
Cheng, Hui-Ming
Article History
Received: 22 July 2015
Accepted: 26 February 2016
First Online: 30 March 2016
Change Date: 27 April 2016
Change Type: Update
Change Details: A correction has been published and is appended to both the HTML and PDF versions of this paper. The error has not been fixed in the paper.
Competing interests
: The authors declare no competing financial interests.