Shigematsu, Koji https://orcid.org/0000-0002-0707-4446
Hoshikawa, Yoichi
Kobayashi, Ukyo
Chiba, Wataru
Sawamura, Seiji
Takahashi, Yoshinori
Article History
Received: 26 June 2019
Accepted: 27 August 2019
First Online: 31 August 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
Free to read: This content has been made available to all.