Kubo, Hisahiko http://orcid.org/0000-0002-1933-7899
Iwaki, Asako
Suzuki, Wataru
Aoi, Shin
Sekiguchi, Haruko
Article History
Received: 24 December 2019
Accepted: 30 January 2020
First Online: 18 February 2020
Competing interests
: The authors have no competing interests to declare.