Sakata, Katsumi
Saito, Toshiyuki
Ohyanagi, Hajime
Okumura, Jun
Ishige, Kentaro
Suzuki, Harukazu
Nakamura, Takuji
Komatsu, Setsuko
Article History
Received: 22 June 2016
Accepted: 7 October 2016
First Online: 24 October 2016
Competing interests
: The authors declare no competing financial interests.