1. Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU)
2. Institute of Dental Medicine, First Faculty of Medicine of the Charles University and General University Hospital in Prague
3. Department of Oral Prosthetic Engineering, Graduate School of Medical and Dental Sciences, Medical and Dental Science and Technology, Tokyo Medical and Dental University (TMDU)
4. Faculty of Dentistry, Bangkok Thonburi University
5. Department of Restorative Dentistry and Periodontology, Faculty of Dentistry, and Center of Excellence in Materials Science and Technology, Chiang Mai University