Okamoto, Fumiki
Morikawa, Shohei
Moriya, Yuki
Sugiura, Yoshimi
Murakami, Tomoya
Tomioka, Mizuki
Hiraoka, Takahiro
Oshika, Tetsuro
Article History
Received: 23 December 2019
Accepted: 4 February 2020
First Online: 18 February 2020
Competing interests
: The authors declare no competing interests.