Fujiwara, Takeo http://orcid.org/0000-0002-1074-3954
Isumi, Aya
Sampei, Makiko
Miyazaki, Yusuke
Yamada, Fujiko
Noma, Hisashi
Ogita, Kazuhide
Mitsuda, Nobuaki
Funding for this research was provided by:
Ministry of Health, Labour and Welfare (H23-Seisaku-Ippan-005)
Japan Science and Technology Agency (JPMJRX16G5)
Article History
First Online: 22 July 2020
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee at the National Center for Child Health and Development (No. 785) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Participants who submit the anonymous response on the questionnaire was considered as agreed to participate the study, which was written in the face sheet of the questionnaire. This opt-out option procedure to obtain informed consent was approved by Ethics Committee in National Center for Child Health and Development.