Shimmei, Keita http://orcid.org/0000-0002-9897-6671
Nakamura, Takahiro
Ng, Chris Fook Sheng http://orcid.org/0000-0003-1025-0807
Hashizume, Masahiro http://orcid.org/0000-0003-4720-1750
Murakami, Yoshitaka
Maruyama, Aya
Misaki, Takako
Okabe, Nobuhiko
Nishiwaki, Yuji
Article History
Received: 13 June 2019
Accepted: 20 March 2020
First Online: 8 May 2020
Competing interests
: The authors declare no competing interests.