Zhai, Quan-Guo
Bu, Xianhui http://orcid.org/0000-0002-2994-4051
Mao, Chengyu
Zhao, Xiang
Daemen, Luke
Cheng, Yongqiang
Ramirez-Cuesta, Anibal J.
Feng, Pingyun
Article History
Received: 11 June 2016
Accepted: 12 October 2016
First Online: 7 December 2016
Competing interests
: The authors declare no competing financial interests.