Funding for this research was provided by:
Received: 14 April 2021
Accepted: 11 May 2022
First Online: 21 May 2022
: This study was conducted according to the principles of the Declaration of Helsinki and the Personal Information Protection Law. The protocols and survey content of this study were reviewed and approved by the Teikyo University Ethics Committee (No. 17–192). The questionnaire survey was conducted only among respondents who provided informed consent.
: Not applicable.
: The authors declare that they have no competing interests.