1. Division of Psychology; Nottingham Trent University; Nottingham UK
2. Highland Council Psychological Service; Inverness UK
3. Bamford Centre for Mental Health and Wellbeing; University of Ulster; Londonderry UK
4. Medical Research Council All-Ireland Hub for Trials Methodology Research; University of Ulster; Londonderry UK
5. Drug Policy Modelling Program; National Drug and Alcohol Research Centre; UNSW Australia; Sydney Australia