Maejima, Yuko
Aoyama, Masato
Sakamoto, Kazuho
Jojima, Teruo
Aso, Yoshimasa
Takasu, Katsuya
Takenosihita, Seiichi
Shimomura, Kenju
Article History
Received: 15 December 2016
Accepted: 26 July 2017
First Online: 17 August 2017
Competing Interests
: The authors declare that they have no competing interests.