Fukumoto, Michitaka
Nakao, Shoichiro
Shigematsu, Kei
Ogawa, Daisuke
Morikawa, Kazuo
Hirose, Yasushi
Hasegawa, Tetsuya
Article History
Received: 7 October 2019
Accepted: 1 April 2020
First Online: 22 April 2020
Competing interests
: The authors declare no competing interests.