Bi, Yuhai
Zhang, Zhenjie
Liu, Wenjun
Yin, Yanbo
Hong, Jianmin
Li, Xiangdong
Wang, Haiming
Wong, Gary
Chen, Jianjun
Li, Yunfeng
Ru, Wendong
Gao, Ruyi
Liu, Di
Liu, Yingxia
Zhou, Boping
Gao, George F.
Shi, Weifeng
Lei, Fumin
Article History
Received: 30 May 2015
Accepted: 1 July 2015
First Online: 11 August 2015
Competing interests
: The authors declare no competing financial interests.