Hirano, Yukinori
Ihara, Kunio
Masuda, Tomoko
Yamamoto, Takuya
Iwata, Ikuko
Takahashi, Aya
Awata, Hiroko
Nakamura, Naosuke
Takakura, Mai
Suzuki, Yusuke
Horiuchi, Junjiro
Okuno, Hiroyuki
Saitoe, Minoru
Article History
Received: 4 January 2016
Accepted: 6 October 2016
First Online: 14 November 2016
Competing interests
: The authors declare no competing financial interests.