Funding for this research was provided by:
Grant-in-Aid for Young Scientists (16K20697)
Received: 26 March 2019
Accepted: 22 November 2019
First Online: 2 December 2019
Ethics approval and consent to participate
: Our study was approved by the Ethics Committee of Kyoto Prefectural University of Medicine (approval number: ERB-C-473, date of approval: Nov 30th, 2015) and was conducted in accordance with the Declaration of Helsinki ethical principles. Written informed consent was obtained from all participants before the initiation of the study.
: Not applicable.
: “Author Ryota Nomura is an Associate Editors in Editorial Board of BMC oral health”.