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APA Citation
Stull, S. W., Panlilio, L. V., Moran, L. M., Schroeder, J. R., Bertz, J. W., Epstein, D. H., Preston, K. L., & Phillips, K. A. (2019). the chippers, the quitters, and the highly symptomatic: A 12-month longitudinal study of DSM-5 opioid- and cocaine-use problems in a community sample. Addictive behaviors, 96, 183–191. http://access.bl.uk/ark:/81055/vdc_100086213460.0x00004b