1. Oral Ecology Research Group, Faculty of Dentistry, Laval University, 2420 Rue de la Terrasse, Quebec City, QC, Canada G1V 0A6
2. Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
3. Department of Oral Health Science and Social Welfare, Institute of Health Biosciences, The University of Tokushima Graduate School, 18-15 Kuramotocho 3-Chome, Tokushima 770-8504, Japan
4. Department of Hygiene and Oral Health Science, Institute of Health Biosciences, The University of Tokushima Graduate School, 18-15 Kuramotocho 3-Chome, Tokushima 770-8504, Japan