Received: 7 June 2021
Accepted: 12 November 2021
First Online: 25 November 2021
: This study was conducted in accordance with the Ethical Guidelines for Medical and Health Research Involving Human Subjects. The Kitasato University Kitasato Institute Hospital, Research Ethics Committee, approved the study (control number: 20051, 20051-2). For this retrospective study, we disclosed the purpose of the study to the participants and provided the option to opt-out before their participation. All participants provided written informed consent to participate in the study. In addition, the choice to opt-out provided participants an opportunity to refuse participation in the research.
: Not applicable.
: The authors declare that they have no competing interests.