Received: 12 July 2020
Accepted: 30 November 2020
First Online: 6 January 2021
Ethics approval and consent to participate
: The study protocol, which adheres to the tenets of the Declaration of Helsinki, was reviewed and approved by the Research Ethics Committee of Tokyo Medical University (approval number: 2474). Written informed consent was obtained from the participants and/or their family members.
: Not Applicable.
: Dr. Y.I discloses payment for expert testimony, lectures including service on speakers’ bureaus and research funding from Eisai Co. Ltd., Alfresa Pharm Corp., MSD K. K., and Takeda Pharmaceutical Co., in addition to research funding from Philips and Koike Medical. The other authors have no conflict of interest related to this study. All authors are responsible for the contents of the paper.