Mibu, Akira http://orcid.org/0000-0002-6141-7809
Kan, Shigeyuki http://orcid.org/0000-0002-1889-5127
Nishigami, Tomohiko
Fujino, Yuji
Shibata, Masahiko
Article History
Received: 25 April 2019
Accepted: 5 March 2020
First Online: 20 March 2020
Competing interests
: The authors declare no competing interests.