Omi, Natsue
Tokuda, Yuichi
Ikeda, Yoko
Ueno, Morio
Mori, Kazuhiko
Sotozono, Chie
Kinoshita, Shigeru
Nakano, Masakazu
Tashiro, Kei
Article History
Received: 15 September 2016
Accepted: 1 February 2017
First Online: 8 March 2017
Competing interests
: The authors declare no competing financial interests.