Omori, Mikimasa
Yamamoto, Jun-ichi
Funding for this research was provided by:
Japan Society for the Promotion of Science (26ยท3116, 16H07200, JP26285213)
Article History
First Online: 14 March 2018
Compliance with Ethical Standards
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Institutional Review Board of the Faculty of Letters of Keio University and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants in the study and their parents.
: The authors declare that they have no conflicts of interest.