Hattori, Masashi http://orcid.org/0000-0002-0644-5137
Iijima, Shinya
Nakao, Takuya
Hosono, Hideo http://orcid.org/0000-0001-9260-6728
Hara, Michikazu http://orcid.org/0000-0003-3450-5704
Article History
Received: 6 November 2019
Accepted: 1 April 2020
First Online: 24 April 2020
Competing interests
: The authors declare no competing interests.