1. Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU)
2. Department of Operative Dentistry, Division of Oral Functional Science and Rehabilitation, School of Dentistry, Asahi University
3. Biomaterials Department, Faculty of Oral and Dental Medicine, Modern University for Technology and Information
4. Faculty of Dentistry, University of Hong Kong