Cheng, Feng http://orcid.org/0000-0003-2982-9675
Wu, Jian
Cai, Chengcheng
Fu, Lixia
Liang, Jianli
Borm, Theo http://orcid.org/0000-0002-2396-8570
Zhuang, Mu
Zhang, Yangyong
Zhang, Fenglan
Bonnema, Guusje http://orcid.org/0000-0002-2298-6849
Wang, Xiaowu
Article History
Received: 19 April 2016
Accepted: 21 October 2016
First Online: 20 December 2016
Competing interests
: The authors declare no competing financial interests.