Funding for this research was provided by:
Japan Society for the Promotion of Science (17K12493)
Received: 19 January 2022
Accepted: 3 June 2022
First Online: 15 June 2022
: This study was approved by the Ethics Committee of the Tokyo Dental and Medical University (approval number: M2019-290). Participants were provided with the study description and consent form via posted letter. They were asked to read the study description and provide informed consent in written format before completing the questionnaire.
: Not applicable.
: The authors declare that they have no competing interests.