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