Xiao, Qiangfeng
Gu, Meng
Yang, Hui
Li, Bing
Zhang, Cunman
Liu, Yang http://orcid.org/0000-0001-5752-5180
Liu, Fang
Dai, Fang http://orcid.org/0000-0002-9229-5576
Yang, Li
Liu, Zhongyi
Xiao, Xingcheng
Liu, Gao
Zhao, Peng
Zhang, Sulin
Wang, Chongmin
Lu, Yunfeng
Cai, Mei
Article History
Received: 15 April 2015
Accepted: 6 October 2015
First Online: 5 November 2015
Competing interests
: The authors declare no competing financial interests.