Yu, Xiaohui
Zhang, Ruifeng
Weldon, David
Vogel, Sven C.
Zhang, Jianzhong
Brown, Donald W.
Wang, Yanbin
Reiche, Helmut M.
Wang, Shanmin
Du, Shiyu
Jin, Changqing
Zhao, Yusheng
Article History
Received: 29 January 2015
Accepted: 1 July 2015
First Online: 28 July 2015
Competing interests
: The authors declare no competing financial interests.