Okui, Tasuku
Article History
Received: 27 December 2025
Accepted: 23 February 2026
First Online: 27 February 2026
Declarations
:
: This study was conducted in accordance with the Declaration of Helsinki and was approved by the Kyushu University Institutional Review Board for Clinical Research (No. 25034). In addition, informed consent was not required for this study because we used the official statistics data that were provided from the Ministry of Health, Labour and Welfare on the basis of the Statistics Act in Japan.
: Not applicable.
: The author declares no competing interests.