1 Primary Palliative Care Research Group, University of Edinburgh, Usher Institute of Population Health Sciences and Informatics, Medical School, Edinburgh EH8 9AG, UK.
2 Cancer and Primary Care Research Group, University of Edinburgh, Usher Institute, Edinburgh, UK.
3 Marie Curie Hospice Glasgow, Glasgow, UK.
4 Health Education and Practices Laboratory, University of Paris 13, Bobigny; SimUSanté, Amiens University Hospital, Paris, France.