Fujioka, Hijiri
Samejima, Hiroaki
Suzuki, Hideyuki
Mizutani, Masaharu
Okamoto, Masanori http://orcid.org/0000-0002-1743-0408
Sugimoto, Yukihiro http://orcid.org/0000-0002-8767-9671
Article History
Received: 22 May 2018
Accepted: 8 January 2019
First Online: 25 February 2019
Competing interests
: The authors declare no competing interests.