1. Center of General, Special Care, & Geriatric Dentistry Center of Dental Medicine University of Zurich Zurich Switzerland
2. Division of Gerodontology and Removable Prosthodontics University Clinics of Dental Medicine University of Geneva Geneva Switzerland
3. Division of Gerodontology School of Dental Medicine University of Bern Bern Switzerland
4. Department of Reconstructive Dentistry and Gerodontology School of Dental Medicine University of Bern Bern Switzerland
5. Division of Geriatrics Department of Rehabilitation and Geriatics Geneva University HospitalsTrois‐Chêne Geneva Switzerland
6. Service of Geriatrics Geneva University Hospitals Geneva Switzerland