Corresponding Author

Kouji Ohta

Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan

Correspondence

Kouji Ohta, Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima 734-8553, Japan.

Email: otkouji@hiroshima-u.ac.jp

Contribution: Conceptualization, Data curation, Formal analysis, ​Investigation, Methodology, Project administration, Writing - original draft