Otani, Koji
Watanabe, Toshio
Shimada, Sunao
Takeda, Shogo
Itani, Shigehiro
Higashimori, Akira
Nadatani, Yuji
Nagami, Yasuaki
Tanaka, Fumio
Kamata, Noriko
Yamagami, Hirokazu
Tanigawa, Tetsuya
Shiba, Masatsugu
Tominaga, Kazunari
Fujiwara, Yasuhiro
Arakawa, Tetsuo
Article History
Received: 13 May 2016
Accepted: 11 August 2016
First Online: 2 September 2016
Competing interests
: The authors declare no competing financial interests.