1. Health Services & Policy Research, Exeter Collaboration for Academic Primary Care (APEx) University of Exeter Exeter UK
2. Institut Universitari d'Investigació en Atenció Primària (IDIAP Jordi Gol) BarcelonaSpain
3. Threads & Yarns International Multimorbidity Research Network
4. National Institute for Health Research (NIHR) Collaboration for Leadership in Applied Health Research and Care (CLAHRC) South West University of Exeter
5. London School of Hygiene & Tropical Medicine, London UK
6. The Johns Hopkins School of Medicine Baltimore MDUSA
7. The Johns Hopkins Center on Aging and Health Baltimore MDUSA
8. Department of Public Health and Primary Care University of Cambridge CambridgeUK
9. Escuela Nacional de Sanidad Instituto de Salud Carlos III MadridSpain
10. Universidad de Alcalá Alcalá de Henares, MadridSpain
11. Instituto Mixto de Investigación IMIENS Escuela Nacional de Salud Universidad Nacional de Educación a Distancia MadridSpain
12. REDISSEC Spanish Network of Health Services and Chronic Patients MadridSpain
13. Netherlands Institute for Health Services Research (NIVEL) UtrechtThe Netherlands
14. Department of Health and Social Management University of Eastern Finland Kuopio Finland