Ishikawa, Natsumi
Omori, Mikimasa
Yamamoto, Jun-ichi
Funding for this research was provided by:
Japan Society for the Promotion of Science (26・3116, 26285213)
Article History
First Online: 31 May 2018
Compliance with Ethical Standards
:
: All three authors report no conflicts of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Keio University Institutional Review Board of the Faculty of Letters and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study and their parents.