Niu, Shuzi
Lan, Yanyan
Guo, Jiafeng
Wan, Shengxian
Cheng, Xueqi
Funding for this research was provided by:
the 973 Program of China (2012CB316303, 2014CB340401)
the 863 Program of China (2012AA011003)
the National Natural Science of China (61472401, 61203298, 61232010)
Article History
Received: 19 May 2014
Accepted: 9 April 2015
First Online: 28 April 2015
Free to read: This content has been made available to all.