1. Department of Health Services Research; CAPHRI, Maastricht University; Maastricht the Netherlands
2. University of Manchester; Manchester England UK
3. University of Turku, Turku; Finland/Turku University Hospital; Turku Finland
4. Department of Health Sciences; Faculty of Medicine; Lund University; Sweden
5. Department of Geriatric Medicine; CHU Toulouse University Hospital; France
6. School of Nursing Science; Faculty of Health; University of Witten/Herdecke; Germany
7. Department of Internal Medicine; University of Tartu; Estonia
8. Nursing Hospital Clinic of Barcelona; Spain