Takaya, Hisamitsu
Nakai, Hidekatsu
Takamatsu, Shiro http://orcid.org/0000-0002-1569-6421
Mandai, Masaki
Matsumura, Noriomi http://orcid.org/0000-0002-4512-7975
Article History
Received: 25 July 2019
Accepted: 3 February 2020
First Online: 17 February 2020
Competing interests
: The authors declare no competing interests.