Funding for this research was provided by:
Japan Society for the Promotion of Science (19K21757)
Article History
Received: 10 June 2020
Accepted: 30 October 2020
First Online: 10 November 2020
Ethics approval and consent to participate
: Ethical approval was granted by the GUSM Ethics Committee. Anonymity and confidentiality were guaranteed (date: 11/30/2016, reference number: 28–333).
: (Not applicable)
: The authors declare that they have no competing interests.