Kato, Shintaro https://orcid.org/0000-0001-6240-1326
Ono, Takayoshi
Minagawa, Hirotaka
Horii, Katsunori
Shiratori, Ikuo
Waga, Iwao
Ito, Koichi
Aoki, Takafumi
Article History
Received: 2 July 2019
Accepted: 16 June 2020
First Online: 24 June 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: SK, HM, KH, IS, and IW are employees of NEC Solution Innovators, Ltd. The company did not have any additional role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript. All other authors declare that they have no competing interests.