scholarly journals A randomised controlled trial of the clinical and cost-effectiveness of a contingency management intervention compared to treatment as usual for reduction of cannabis use and of relapse in early psychosis (CIRCLE): a study protocol for a randomised controlled trial

Trials ◽  
2016 ◽  
Vol 17 (1) ◽  
Author(s):  
Sonia Johnson ◽  
Luke Sheridan Rains ◽  
Steven Marwaha ◽  
John Strang ◽  
Thomas Craig ◽  
...  
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