Jitsuishi, Tatsuya
Hirono, Seiichiro
Yamamoto, Tatsuya
Kitajo, Keiko
Iwadate, Yasuo
Yamaguchi, Atsushi
Article History
Received: 27 June 2019
Accepted: 8 January 2020
First Online: 21 January 2020
Competing interests
: The authors declare no competing interests.