Takeda, Teppei
Kajiwara, Riko
Omura, Kazuhiro
Otori, Nobuyoshi
Wada, Kota
Article History
Received: 22 October 2019
Accepted: 11 April 2020
First Online: 22 April 2020
Compliance with ethical standards
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation and with the Helsinki Declaration of 1975.
: 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 Toho University Omori Medical Center Institutional Review Board (approval no.: M18112) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: The requirement for informed consent was waived due to the retrospective nature of the study.