Miyagawa, Kazuaki
Tanaka, Susumu http://orcid.org/0000-0002-0306-3627
Hiroishi, Sachie
Matsushita, Yutaka
Murakami, Shumei
Kogo, Mikihiko
Article History
Received: 6 February 2019
Accepted: 30 October 2019
First Online: 9 November 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Approval from the Institutional Review Board of the Osaka University Dental Hospital, Osaka University Graduate School of Dentistry, was obtained for this study (H26-E47). All procedures performed in studies involving human participants were in accordance with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from parents of all individual participants included in the study.