Iyoda, Akira http://orcid.org/0000-0002-0908-4840
Azuma, Yoko
Sakai, Takashi
Koezuka, Satoshi
Otsuka, Hajime
Sano, Atsushi
Article History
Received: 3 September 2020
Accepted: 4 January 2021
First Online: 9 January 2021
Ethics approval and consent to participate
: This study was approved by the Toho University Omori Medical Center Ethics Committee (M20033). This study was conducted based on patient data from 2016 to 2020. Because this study was retrospective and we utilized existing information of all patients, we did not require permission to access and use the individual data/video files and we did not obtain individual consent from all patients according to Ethical Guidelines for Medical and Health Research Involving Human Subjects of the Ministry of Health, Labour and Welfare in Japan (ExternalRef removed).The presented study design was accepted by the ethics committee on the condition that a document that declares an opt-out policy by which any possible patient and/or relatives could refuse to be included in this study was uploaded on the Web page of the Toho University Omori Medical Center.
: Not applicable.
: We have no conflicts of Interest in this study.