1. Removable Partial Prosthodontics; Oral Health Sciences; Graduate School of Medical and Dental Sciences; Tokyo Medical and Dental University; Tokyo Japan
2. Department of Prosthodontics; Gerodontology and Oral Rehabilitation; Osaka University; Suita Osaka Japan
3. Department of Prosthodontics; Showa University School of Dentistry; Tokyo Japan
4. Section of Implant and Rehabilitative Dentistry; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; Fukuoka Japan
5. Division of Advanced Prosthetic Dentistry; Graduate School of Dentistry; Tohoku University; Sendai Japan
6. Department of Prosthodontics; Ohu University; Koriyama Japan
7. Department of Oral Rehabilitation and Regenerative Medicine; Graduate School of Medicine; Dentistry and Pharmaceutical Sciences; Okayama University Graduate School of Medicine and Dentistry; Okayama Japan
8. Oral Implantology and Regenerative Dental Medicine; Oral Health Sciences; Graduate School of Medical and Dental Sciences; Tokyo Medical and Dental university; Tokyo Japan
9. Advanced Prosthodontics; Biomaterials and Hospital Dentistry; UCLA School of Dentistry; California USA