Wang, Dongxue
Bie, Xiaofei
Fu, Qiang
Dixon, Ditty
Bramnik, Natalia
Hu, Yong-Sheng http://orcid.org/0000-0002-8430-6474
Fauth, Francois
Wei, Yingjin
Ehrenberg, Helmut http://orcid.org/0000-0002-5134-7130
Chen, Gang
Du, Fei
Article History
Received: 7 November 2016
Accepted: 10 May 2017
First Online: 29 June 2017
Competing interests
: The authors declare no competing financial interests.