1. Department of Oral Health Care and Rehabilitation, Doctor’s Course of Oral Health Science, Graduate School of Oral Sciences, Tokushima University, Tokushima-shi, Tokushima, JAPAN
2. Department of Oral Health Care and Rehabilitation, Subdivision of Oral Health and Welfare, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima-shi, Tokushima, JAPAN