Zhang, Jian http://orcid.org/0000-0002-0912-1197
Wang, Tao
Liu, Pan http://orcid.org/0000-0002-4063-9605
Liao, Zhongquan
Liu, Shaohua http://orcid.org/0000-0001-9079-5334
Zhuang, Xiaodong
Chen, Mingwei
Zschech, Ehrenfried
Feng, Xinliang
Article History
Received: 28 November 2016
Accepted: 30 March 2017
First Online: 17 May 2017
Competing interests
: The authors declare no competing financial interests.