Wang, Yunan
Kayoumu, Abudurexiti
Lu, Guotao
Xu, Pengfei
Qiu, Xu
Chen, Liye
Qi, Rong
Huang, Shouxiong
Li, Weiqin
Wang, Yuhui
Liu, George
Article History
Received: 2 February 2016
Accepted: 27 May 2016
First Online: 15 June 2016
Change Date: 20 July 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.