1. Institute of Health Research; University of Exeter Medical School; Exeter UK
2. Department of Anesthesia; BC Women's Hospital; Vancouver, BC Canada
3. Faculty of Nursing; University of Alberta; Edmonton Canada
4. Department of Primary Care; University of Exeter Medical School, Truro Campus, Knowledge Spa, Royal Cornwall Hospitals Trust; Truro UK
5. Danish Knowledge Centre for Rehabilitation and Palliative Care; University of Southern Denmark and Region of Southern Denmark; Copenhagen Denmark
6. Institute of Health Informatics Research; University College London; London UK
7. MRC/CSO Social and Public Health Sciences Unit & Robertson Centre for Biostatistics, Institute of Health and Well Being; University of Glasgow; Glasgow UK