Kim, Minji
Goto, Tsuyoshi
Yu, Rina
Uchida, Kunitoshi
Tominaga, Makoto
Kano, Yuriko
Takahashi, Nobuyuki
Kawada, Teruo
Article History
Received: 1 April 2015
Accepted: 10 November 2015
First Online: 17 December 2015
Competing interests
: The authors declare no competing financial interests.