Hori, Tetsuya https://orcid.org/0000-0002-4025-3534
Okuno, Toshiaki https://orcid.org/0000-0003-0270-5744
Hirata, Kunio
Yamashita, Keitaro https://orcid.org/0000-0002-5442-7582
Kawano, Yoshiaki
Yamamoto, Masaki
Hato, Masakatsu
Nakamura, Motonao https://orcid.org/0000-0001-5013-7812
Shimizu, Takao
Yokomizo, Takehiko https://orcid.org/0000-0002-5219-1553
Miyano, Masashi https://orcid.org/0000-0003-2253-6175
Yokoyama, Shigeyuki https://orcid.org/0000-0003-3133-7338
Article History
Received: 14 April 2017
Accepted: 14 November 2017
First Online: 8 January 2018
Competing interests
: The authors declare no competing financial interests.