Kurihara, Takayuki
Hirota, Kazumasa
Qiu, Hongsong
Phan, Khoa Thanh Nhat
Kato, Kosaku
Isoyama, Goro
Nakajima, Makoto
Article History
Received: 15 September 2019
Accepted: 13 April 2020
First Online: 30 April 2020
Competing interests
: The authors declare no competing interests.