Shi, Xianping
Lan, Xiaoying
Chen, Xin
Zhao, Chong
Li, Xiaofen
Liu, Shouting
Huang, Hongbiao
Liu, Ningning
Zang, Dan
Liao, Yuning
Zhang, Peiquan
Wang, Xuejun
Liu, Jinbao
Article History
Received: 26 August 2014
Accepted: 2 February 2015
First Online: 8 April 2015
Competing interests
: The authors declare no competing financial interests.