Hamanoue, Makoto
Morioka, Kazuhito
Ohsawa, Ikuroh
Ohsawa, Keiko
Kobayashi, Masaaki
Tsuburaya, Kayo
Akasaka, Yoshikiyo
Mikami, Tetsuo
Ogata, Toru
Takamatsu, Ken
Article History
Received: 16 March 2015
Accepted: 23 March 2016
First Online: 12 April 2016
Competing interests
: The authors declare no competing financial interests.