Soyama, Hiroaki https://orcid.org/0000-0003-0841-7743
Miyamoto, Morikazu https://orcid.org/0000-0003-4763-0926
Matsuura, Hiroko
Iwahashi, Hideki https://orcid.org/0000-0002-0139-2283
Kakimoto, Soichiro https://orcid.org/0000-0002-2314-984X
Ishibashi, Hiroki https://orcid.org/0000-0002-8745-6160
Sakamoto, Takahiro https://orcid.org/0000-0003-3107-5016
Hada, Taira https://orcid.org/0000-0003-3426-9000
Suminokura, Jin
Takano, Masashi https://orcid.org/0000-0001-6916-9398
Article History
Received: 3 January 2020
Accepted: 2 April 2020
First Online: 11 April 2020
Compliance with ethical standards
:
: The authors declare no conflict of interest, financial or otherwise.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Since our study was a retrospective analysis, formal informed consent was not obtained.