Fukazawa, Takuya
Guo, Minzhe
Ishida, Naomasa
Yamatsuji, Tomoki
Takaoka, Munenori
Yokota, Etsuko
Haisa, Minoru
Miyake, Noriko
Ikeda, Tomoko
Okui, Tatsuo
Takigawa, Nagio
Maeda, Yutaka
Naomoto, Yoshio
Article History
Received: 29 June 2015
Accepted: 29 December 2015
First Online: 5 February 2016
Competing interests
: The authors declare no competing financial interests.