Sakata, Kensuke
Kawano, Go
Suda, Masao
Yokochi, Takaoki
Yae, Yukako
Imagi, Toru
Akita, Yukihiro
Ohbu, Keizo
Matsuishi, Toyojiro
Article History
Received: 8 September 2019
Accepted: 14 May 2020
First Online: 4 June 2020
Competing interests
: The authors declare no competing interests.