Hirakawa, Yuki
Shinohara, Hidefumi
Welke, Kai
Irle, Stephan http://orcid.org/0000-0003-4995-4991
Matsubayashi, Yoshikatsu
Torii, Keiko U. http://orcid.org/0000-0002-6168-427X
Uchida, Naoyuki
Article History
Received: 20 May 2016
Accepted: 13 December 2016
First Online: 6 February 2017
Competing interests
: The authors declare no competing financial interests.