[1] King's College London,Institute of Psychiatry
[2] King's College London,National Addiction Center, Institute of Psychiatry
[3] University of Kent,Center for Health Service Studies
[4] Newcastle University,Institute of Health and Society
[5] University of York,Department of Health Sciences
[6] Humber National Health Service Foundation Trust,School of Medicine
[7] University of Manchester,Division of Psychology (Emeritus)
[8] Northumbria University,undefined