Fujieda, Yuki
Morita, Keiichi
Fukuzawa, Hiroaki
Maeda, Kosaku
Article History
Accepted: 6 November 2020
First Online: 2 January 2021
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: This study has been approved by the institutional ethics committee (approval number: R31-23) and performed in line with the principles of the Declaration of Helsinki.
: Since this study was widely open to the public, guaranteed a refusal to cooperate, and the data was anonymous, separate informed consent was waived.