Kokura, Yoji https://orcid.org/0000-0003-3261-8721
Nishioka, Shinta https://orcid.org/0000-0002-6726-8605
Okamoto, Takatsugu
Takayama, Masako
Miyai, Ichiro
Article History
Received: 5 January 2019
Revised: 8 May 2019
Accepted: 22 May 2019
First Online: 26 June 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.