Dai, Han-Ning http://orcid.org/0000-0003-0916-7942
Yang, Bing
Reingruber, Andreas
Sun, Hui
Xu, Xiao-Fan
Chen, Yu-Ao
Yuan, Zhen-Sheng http://orcid.org/0000-0003-4580-8225
Pan, Jian-Wei
Article History
Received: 20 December 2016
Accepted: 25 July 2017
First Online: 28 August 2017
Competing interests
: The authors declare no competing financial interests.