Ohi, Kazutaka
Shimada, Takamitsu
Kihara, Hiroaki
Yasuyama, Toshiki
Sawai, Kazuyuki
Matsuda, Yukihisa
Oshima, Kazuaki
Okubo, Hiroaki
Nitta, Yusuke
Uehara, Takashi
Kawasaki, Yasuhiro
Article History
Received: 20 July 2016
Accepted: 7 February 2017
First Online: 15 March 2017
Competing interests
: The authors declare no competing financial interests.