1. Division of Gerodontology and Removable Prosthodontics University Clinics of Dental Medicine University of Geneva Geneva Switzerland
2. Department of Oral Rehabilitation School of Dentistry Federal University of Goias Goiania Goias Brazil
3. Centre for Public Health Queen's University Belfast Belfast UK
4. Department of Reconstructive Dentistry and Gerodontology School of Dental Medicine University of Bern Bern Switzerland
5. Division of Geriatrics Department of Rehabilitation and Geriatrics University Hospitals of Geneva Thônex Switzerland