Heianna, Joichi http://orcid.org/0000-0002-8869-6924
Makino, Wataru
Toguchi, Masafumi
Kusada, Takeaki
Iraha, Tomotaka
Ishikawa, Kazuki
Takehara, Shota
Maemoto, Hitoshi
Ariga, Takuro
Murayama, Sadayuki
Article History
Received: 7 April 2021
Accepted: 22 July 2021
First Online: 2 August 2021
Declarations
:
: The authors declare that they have no conflict of interest.
: 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. For this type of study, formal consent is not required<b>.</b> This single-center, retrospective study was approved by the institutional ethics review board of our institution.
: This study has obtained IRB approval from the institutional ethics review board of University of the Ryukyus, and the need for informed consent was waived.
: For this type of study consent for publication is not required.