Hourai, Masataka http://orcid.org/0000-0001-9710-4057
Asayama, Eiichi
Nishikawa, Hideshi
Nishimoto, Manabu
Ono, Toshiaki
Okui, Masahiko
Article History
Received: 9 December 2019
Accepted: 5 May 2020
First Online: 20 May 2020
Conflict of interest
: The authors declare that they have no conflict of interest.