Ji, Wei
Lee, Chun-Hong
Chen, Peng
Hu, Wei
Ming, Yang
Zhang, Lijian
Lin, Tsung-Hsien
Chigrinov, Vladimir
Lu, Yan-Qing
Article History
Received: 2 December 2015
Accepted: 14 April 2016
First Online: 6 May 2016
Competing interests
: The authors declare no competing financial interests.