Funding for this research was provided by:
JSPS KAKENHI (JP15H05049)
Text and Data Mining valid from 2018-04-16
Received: 14 September 2017
Accepted: 9 April 2018
First Online: 16 April 2018
Ethics approval and consent to participate
: This study was conducted in full adherence to the Declaration of Helsinki. The study protocol was approved by the Ethics Committee of Osaka University Graduate School of Dentistry (approval no. H23-E1-5). Prior to specimen collection, the subjects were informed of the study contents and written informed consent was obtained from all participants. When the participant was aged under 16, parental written informed consent was also obtained.
: The authors declare that they have no competing interests.
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