Wei, Caihong
Wang, Huihua
Liu, Gang
Zhao, Fuping
Kijas, James W.
Ma, Youji
Lu, Jian
Zhang, Li
Cao, Jiaxue
Wu, Mingming
Wang, Guangkai
Liu, Ruizao
Liu, Zhen
Zhang, Shuzhen
Liu, Chousheng
Du, Lixin
Article History
Received: 22 June 2015
Accepted: 9 May 2016
First Online: 27 May 2016
Competing interests
: The authors declare no competing financial interests.