Affiliation: | 1. Department of Periodontal Medicine, Applied Life Sciences, Institute of Biomedical & Health Sciences, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan;2. Department of Oral and Maxillofacial Pathology, Basic Life Sciences, Institute of Biomedical and Health Science, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan;3. Center of Oral Clinical Examination, Hiroshima University Hospital, Hiroshima, Japan |