Morioka, Hirotsugu
Aoki, Jun
Fujino, Kazuyoshi
Sugahara, Yuki
Orihata, Michihiro
Goto, Michitoshi
Kobayashi, Shigeru
Okazawa, Yu
Article History
Received: 13 September 2019
Accepted: 26 December 2019
First Online: 9 January 2020
Ethics approval and consent to participate
: Not applicable.
: I have consent to publish.
: The authors declare that they have no competing interests.