Tokumaru, Yoshihisa
Matsuhashi, Nobuhisa
Takahashi, Takao
Imai, Hisashi
Tanaka, Yoshihiro
Okumura, Naoki
Yamaguchi, Kazuya
Yoshida, Kazuhiro
Article History
Received: 20 November 2019
Accepted: 19 March 2020
First Online: 13 April 2020
Ethics approval and consent to participate
: Not applicable
: Not applicable
: None of the authors have any conflicts of interest to declare