Meister 2010.

Methods	German dissertation. Requires translation. Allocation: randomised. Design: cluster‐RCT.
Participants	Young people with first episode psychosis and substance misuse. N = 65.
Interventions	1. Group‐based motivational behavioural therapy (MOVE); N = 36, 9 clusters. 2. TAU: Supportive treatment for addiction recovery (STAR); N = 29, 7 clusters.
Outcomes	Days of alcohol and substance use, quality of life and client satisfaction.
Notes	To be assessed, PhD dissertation needs translation from German to English. Supervisor (M Lambert) sent e‐mail, no reply.