1. NIVEL; Netherlands Institute for Health Services Research; Utrecht The Netherlands
2. Nuffield Department of Primary Care Health Sciences; University of Oxford; UK
3. Faculty of Social and Human Sciences; University of Southampton; UK
4. School of Applied Psychology; University College Cork; Ireland
5. Department of Clinical and Health Psychology; Utrecht University; The Netherlands
6. Department of Primary and Community Care; Radboud University Nijmegen Medical Centre; The Netherlands
7. Faculty of Health Sciences; Buskerud and Vestfold University College; Drammen Norway