Zou, Shanshan
Li, Jiarui
Zhou, Huabang
Frech, Christian
Jiang, Xiaolan
Chu, Jeffrey S. C.
Zhao, Xinyin
Li, Yuqiong
Li, Qiaomei
Wang, Hui
Hu, Jingyi
Kong, Guanyi
Wu, Mengchao
Ding, Chuanfan
Chen, Nansheng
Hu, Heping
Article History
Received: 31 May 2014
Accepted: 29 October 2014
First Online: 15 December 2014
Competing interests
: The authors declare no competing financial interests.