Yokoyama, Iichiro
Yamaguchi, Hiroki
Yamazaki, Kaori
Sekiya, Misato
Arai, Sayaka
Nakamura, Takako
Suzuki, Takaaki
Ishii, Itsuko
Article History
Received: 17 September 2020
Accepted: 5 January 2021
First Online: 18 January 2021
Competing interests
: The authors declare no competing interests.