Sun, Xiaoming
Zhao, Tingting
Gan, Shuheng
Ren, Xiaodie
Fang, Linchuan
Karungo, Sospeter Karanja
Wang, Yi
Chen, Liang
Li, Shaohua
Xin, Haiping
Article History
Received: 27 January 2016
Accepted: 21 March 2016
First Online: 4 April 2016
Competing interests
: The authors declare no competing financial interests.