1. Clinical and Applied Psychology Unit, Department of Psychology, University of Sheffield, Sheffield, United Kingdom
2. Rotherham Doncaster and South Humber NHS Foundation Trust, Doncaster, United Kingdom
3. Department of Epidemiology and Biostatistics, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
4. Institute of Mental Health Policy Research, Centre for Addictions and Mental Health, Toronto, Ontario, Canada
5. Mental Health and Addictions Research Group, Department of Health Sciences, University of York, York, United Kingdom
6. Department of Psychology, Macquarie University, Sydney, Australia
7. Lancashire and South Cumbria NHS Foundation Trust, Preston, United Kingdom
8. Department of Psychiatry, University of California, Los Angeles
9. Department of Psychology, University of Pennsylvania, Philadelphia