Rong, Mingqiang
Liu, Jiangxin
Zhang, Meilin
Wang, Gan
Zhao, Gang
Wang, Guodong
Zhang, Yaping
Hu, Kaifeng
Lai, Ren
Article History
Received: 13 January 2016
Accepted: 23 June 2016
First Online: 13 July 2016
Competing interests
: The authors declare no competing financial interests.