Kirihara, Akihiro
Kondo, Koichi
Ishida, Masahiko
Ihara, Kazuki
Iwasaki, Yuma
Someya, Hiroko
Matsuba, Asuka
Uchida, Ken-ichi
Saitoh, Eiji
Yamamoto, Naoharu
Kohmoto, Shigeru
Murakami, Tomoo
Article History
Received: 1 April 2015
Accepted: 29 February 2016
First Online: 15 March 2016
Competing interests
: The authors declare no competing financial interests.