Shimizu, Noriaki
Maruyama, Takako
Yoshikawa, Noritada
Matsumiya, Ryo
Ma, Yanxia
Ito, Naoki
Tasaka, Yuki
Kuribara-Souta, Akiko
Miyata, Keishi
Oike, Yuichi
Berger, Stefan
Schütz, Günther
Takeda, Shin’ichi
Tanaka, Hirotoshi
Article History
Received: 23 September 2014
Accepted: 19 February 2015
First Online: 1 April 2015
Competing interests
: The authors declare no competing financial interests.