Feng, Hui http://orcid.org/0000-0002-0570-5718
Guo, Zilong
Yang, Wanneng
Huang, Chenglong
Chen, Guoxing
Fang, Wei
Xiong, Xiong
Zhang, Hongyu
Wang, Gongwei
Xiong, Lizhong http://orcid.org/0000-0003-0490-1474
Liu, Qian
Article History
Received: 16 March 2017
Accepted: 17 May 2017
First Online: 30 June 2017
Competing Interests
: The authors declare that they have no competing interests.