Received: 6 October 2021
Accepted: 1 April 2022
First Online: 8 April 2022
: This study was approved by the institutional review board of Keio University School of Medicine (IRB No. 20080054 and 20190116) and participants provided written informed consent to participate. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: None of the authors had any conflict of interest regarding this manuscript.