1. Division of Medicine; Nordland Hospital; Bodø Norway
2. Institute of Clinical Medicine; Faculty of Health Sciences; University of Tromsø; Tromsø Norway
3. Health Communication Unit; Madrid University Carlos III; Madrid Spain
4. Intensive Care Unit; Poniente Hospital; El Ejido-Almeria Spain
5. Research Network in Health Services in Chronic Diseases (REDISSEC); Valencia Spain
6. Health Services Research Area; Foundation for the Promotion of Healthcare and Biomedical Research in the Valencian Community; Valencia Spain