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Article History

Received: 21 February 2022

Accepted: 21 March 2022

First Online: 11 April 2022

Declarations

:

: Ichiro Yoshii, Naoya Sawada, and Tatsumi Chijiwa declare that they have no conflict of interest. And their families have nothing to declare for this study. None of author and his families have share income, property with any person, or any grants or other financial supports of the study.

: This study was approved by our ethics committee (approval number: YH-RA-2021-3) in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. In addition, anonymity was ensured for all patients and families who participated in this study, and no names and/or addresses were issued that could help identify these individuals.

: Not applicable.

: Not applicable.