Yamamoto, Kenkichi
Yamamoto, Shinji
Funding for this research was provided by:
Kao Corporation
Article History
Received: 9 September 2022
Accepted: 21 December 2022
First Online: 24 December 2022
Declarations
:
: The study protocol was approved by the Ethics Committee of the Kao Corporation (approval number: S201-180918), and written informed consent was obtained from all research volunteers. This study was conducted according to the Declaration of Helsinki Principles.
: Not applicable.
: The authors declare that they have no competing interests.