Sakamoto, Yasumitsu
Suzuki, Yoshiyuki
Iizuka, Ippei
Tateoka, Chika
Roppongi, Saori
Fujimoto, Mayu
Inaka, Koji
Tanaka, Hiroaki
Masaki, Mika
Ohta, Kazunori
Okada, Hirofumi
Nonaka, Takamasa
Morikawa, Yasushi
Nakamura, Kazuo T.
Ogasawara, Wataru
Tanaka, Nobutada
Article History
Received: 5 March 2014
Accepted: 24 April 2014
First Online: 15 May 2014
Competing interests
: The authors declare no competing financial interests.