1. Primary Care and Population Sciences; University of Southampton; Southampton UK
2. London School of Hygiene and Tropical Medicine; London UK
3. School of Health and Rehabilitation Sciences; University of Queensland; Brisbane Queensland Australia
4. Faculty of Health Sciences; University of Southampton; Southampton UK
5. Psychology Research Group; Institute of Cancer Research; Sutton UK
6. Institute of Psychology, Health and Society; University of Liverpool; Liverpool UK
7. The Helplines Partnership; Peterborough UK
8. Social Sciences; Loughborough University; Loughborough UK