Article History
Received: 25 January 2023
Accepted: 14 July 2023
First Online: 19 July 2023
Declarations
: The authors declare that no funds, grants, or other support were received during the preparation of this manuscript. The authors have no relevant financial or non-financial interests to disclose. All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by Ken TOKUHARA. The first draft of the manuscript was written by Ken TOKUHARA and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.