Tanaka, Masaharu
Kidokoro, Hiroyuki
Kubota, Tetsuo
Fukasawa, Tatsuya
Okai, Yu
Sakaguchi, Yoko
Ito, Yuji
Yamamoto, Hiroyuki
Ohno, Atsuko
Nakata, Tomohiko
Negoro, Tamiko
Okumura, Akihisa
Kato, Toru
Watanabe, Kazuyoshi
Takahashi, Yoshiyuki
Natsume, Jun
Article History
Received: 29 January 2019
Revised: 8 August 2019
Accepted: 16 August 2019
First Online: 7 September 2019
Competing interests
: The authors declare no competing interests.