1. CAP Comte Borrell; Barcelona Spain
2. Hospital Clinic de Barcelona; Spain
3. University Pompeu Fabra; School TecnoCampus; Mataró Spain
4. Department of Internal Medicine; Hospital Clínic de Barcelona; Spain
5. Department of Health Sciences; Lund University; Sweden
6. Department of Health Services Research; CAPHRI; Maastricht University; The Netherlands
7. Martin-Luther-University Halle-Wittenberg; Institute of Health and Nursing Science; Germany
8. Department of Nursing Science; University of Turku; Finland
9. Department of Geriatrics; University Hospital of Toulouse; France
10. Department of Nursing; Hospital Clínic de Barcelona; Spain