Hirako, Satoshi
Wada, Nobuhiro
Kageyama, Haruaki
Takenoya, Fumiko
Izumida, Yoshihiko
Kim, Hyounju
Iizuka, Yuzuru
Matsumoto, Akiyo
Okabe, Mai
Kimura, Ai
Suzuki, Mamiko
Yamanaka, Satoru
Shioda, Seiji
Article History
Received: 13 July 2015
Accepted: 18 January 2016
First Online: 19 February 2016
Competing interests
: The authors declare no competing financial interests.