Takeda, Ryosuke https://orcid.org/0000-0002-6535-0912
Sumura, Kazushi
Nishikawa, Taichi https://orcid.org/0000-0002-9510-8879
Watanabe, Kohei
Funding for this research was provided by:
Rinnai Corporation
Article History
Received: 14 July 2025
Accepted: 1 October 2025
First Online: 15 October 2025
Declarations
:
: The authors have no conflict of interest to declare. The results of the study are presented clearly, honestly, and without fabrication, falsification, or inappropriate data manipulation.