Wang, Haidong
Hu, Shiqian
Takahashi, Koji
Zhang, Xing
Takamatsu, Hiroshi
Chen, Jie http://orcid.org/0000-0003-4599-3600
Article History
Received: 17 October 2016
Accepted: 9 May 2017
First Online: 13 June 2017
Competing interests
: The authors declare no competing financial interests.