Itoh, Takeshi http://orcid.org/0000-0002-6291-4233
Onuki, Ritsuko
Tsuda, Mai
Oshima, Masao
Endo, Masaki http://orcid.org/0000-0002-9199-181X
Sakai, Hiroaki
Tanaka, Tsuyoshi
Ohsawa, Ryo
Tabei, Yutaka
Funding for this research was provided by:
Cabinet Office, Government of Japan
Article History
Received: 29 September 2019
Accepted: 5 March 2020
First Online: 18 March 2020
Competing interests
: The authors declare no competing interests.