1. School CAPHRI/Department of HSR; Maastricht University; the Netherlands
2. Department of Nursing Science; Faculty of Medicine; University of Turku; Finland
3. School of Nursing Science; Witten/Herdecke University; Germany
4. Hospital Clinic of Barcelona; Spain
5. Department of Internal Medicine; University of Tartu; Estonia
6. Personal Social Services Research Unit; University of Manchester; UK
7. Faculty of Medicine; Department of Nursing Science; Lund University; Sweden
8. Geriatrics Departement; INSERM U 1027; Toulouse University Hospital; France