Wang, Ningjian
Chen, Chi
Nie, Xiaomin
Han, Bing
Li, Qin
Chen, Yi
Zhu, Chunfang
Chen, Yingchao
Xia, Fangzhen
Cang, Zhen
Lu, Meng
Meng, Ying
Zhai, Hualing
Lin, Dongping
Cui, Shiyong
Jensen, Michael D.
Lu, Yingli
Article History
Received: 28 July 2015
Accepted: 16 November 2015
First Online: 14 December 2015
Competing interests
: The authors declare no competing financial interests.