1. Division of Gerodontology and Removable Prosthodontics University Clinics of Dental Medicine University of Geneva Geneva Switzerland
2. Department of Geriatric Dentistry School of Dentistry Showa University Tokyo Japan
3. Yoshiki Imamura Meikai University School of Dentistry Division of Fixed Prosthodontics Saitama Japan
4. Department of Removable Prosthodontics & Gerodontology Tokyo Dental College Tokyo Japan
5. Department of Rehabilitation and Geriatrics University Hospitals Geneva Geneva Switzerland
6. Division of Fixed Prosthodontics and Biomaterials University Clinics of Dental Medicine University of Geneva Geneva Switzerland
7. Department of Reconstructive Dentistry and Gerodontology School of Dental Medicine University of Bern Bern Switzerland
8. Comprehensive Dental Care The Nippon Dental University Niigata Hospital Niigata Japan