1. Department of Hygiene and Oral Health Science; Institute of Health Biosciences; The University of Tokushima Graduate School; Tokushima Japan
2. Department of Oral Health Science and Social Welfare; Institute of Health Biosciences; The University of Tokushima Graduate School; Tokushima Japan
3. Groupe de Recherche en Écologie Buccale; Faculté de Médecine Dentaire; Université Laval; Quebec City QC Canada