1. Division of Gerodontology, School of Dental Medicine; University of Bern; Bern Switzerland
2. Division of Gerodontology and Removable Prosthodontics, University Clinics of Dental Medicine; University of Geneva; Geneva Switzerland
3. Division of Neurorehabilitation, Department of Clinical Neurosciences; University Hospitals and University of Geneva; Geneva Switzerland
4. Department of Internal Medicine, Rehabilitation and Geriatrics; University Hospitals of Geneva; Geneva Switzerland