Fujimori, Shinichiro http://orcid.org/0000-0001-7897-1796
Hasegawa, Tomoko http://orcid.org/0000-0003-2456-5789
Ito, Akihiko http://orcid.org/0000-0001-5265-0791
Takahashi, Kiyoshi
Masui, Toshihiko
Article History
Received: 11 May 2018
Accepted: 15 August 2018
First Online: 16 October 2018
Competing interests
: The authors declare no competing interests.