Cheng, Jinbing
Lu, Yang
Qiu, Kangwen
Yan, Hailong
Xu, Jinyou
Han, Lei
Liu, Xianming
Luo, Jingshan
Kim, Jang-Kyo
Luo, Yongsong
Article History
Received: 8 February 2015
Accepted: 16 June 2015
First Online: 1 July 2015
Competing interests
: The authors declare no competing financial interests.