Funding for this research was provided by:
Japan Society for the Promotion of Science (JP18K02492)
Article History
Received: 5 April 2020
Accepted: 30 June 2020
First Online: 8 July 2020
Compliance with ethical standards
:
: The authors have no conflicts of interest to declare.
: As the data had to be obtained immediately after the earthquake, we did not have time to apply to the ethical review board; however, all procedures performed in the study involving human participants were in accordance with the ethical standards of the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all participants included in the study.