Yang, Weihuang
Li, Jinchai
Zhang, Yong
Huang, Po-Kai
Lu, Tien-Chang
Kuo, Hao-Chung
Li, Shuping
Yang, Xu
Chen, Hangyang
Liu, Dayi
Kang, Junyong
Article History
Received: 27 December 2013
Accepted: 14 May 2014
First Online: 5 June 2014
Competing interests
: The authors declare no competing financial interests.