Liu, Chunsheng
Su, Guanyong
Giesy, John P.
Letcher, Robert J.
Li, Guangyu
Agrawal, Ira
Li, Jing
Yu, Liqin
Wang, Jianghua
Gong, Zhiyuan
Article History
Received: 9 July 2015
Accepted: 4 December 2015
First Online: 8 January 2016
Competing interests
: The authors declare no competing financial interests.