Munakata, Mitsutoshi
Kodama, Hiroko
Tani, Norihiko
Kimura, Kazuhiko
Takahashi, Hideyo
Maruyama, Kazuo
Sakamoto, Yoshimasa
Kure, Shigeo
Article History
Received: 20 February 2018
Revised: 30 June 2018
Accepted: 3 July 2018
First Online: 17 July 2018
Competing interests
: The authors declare no competing interests.