| Affiliation: | 1. Graduate School of Media and Governance, Keio University, Fujisawa‐City, Kanagawa, Japan;2. Center for Advanced Dental Education, Kyushu Dental University, Kitakyushu, Fukuoka, Japan;3. Mikami Dental & Orthodontics Clinic, Tomakomai, Hokkaido, Japan;4. Matsumoto Dental Clinic, Okazaki, Aichi, Japan;5. Department of Clinical and Community Sciences, School of Dentistry, University of Alabama, Birmingham, AL, USA;6. Department of Restorative Dental Sciences, College of Dentistry, University of Florida, Gainesville, FL, USA |
