1. Division of GerodontologySchool of Dental MedicineUniversity of Bern Bern Switzerland
2. Division of Gerodontology and Removable ProsthodonticsUniversity Clinics of Dental MedicineUniversity of Geneva Geneva Switzerland
3. Centre for Public HealthQueen's University Belfast Institute of Clinical Sciences Belfast UK
4. Department of Internal Medicine, Rehabilitation and GeriatricsUniversity Hospitals of Geneva Thônex Switzerland