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APA Citation
Northrup, T. F., Greer, T. L., Walker, R., Rethorst, C. D., Warden, D., Stotts, A. L., & Trivedi, M. H. (2017). an ounce of prevention: A pre-randomization protocol to improve retention in substance use disorder clinical trials. Addictive behaviors, 64, 137–142. http://access.bl.uk/ark:/81055/vdc_100039991712.0x00002f