Ohara, Maya
Kohara, Katsuhiko
Okada, Yoko
Ochi, Masayuki
Nagai, Tokihisa
Ohyagi, Yasumasa
Tabara, Yasuharu
Igase, Michiya
Article History
Received: 31 October 2016
Accepted: 15 March 2017
First Online: 13 April 2017
Competing interests
: The authors declare no competing financial interests.