Frequency of cannabis and illicit opioid use among people who use drugs and report chronic pain: A longitudinal analysis
Lake, Stephanie ; Walsh, Zach ; Kerr, Thomas ; Cooper, Ziva D ; Buxton, Jane ; Wood, Evan ; Ware, Mark A ; Milloy, M J Alegria, Margarita
PLoS medicine, 2019-11, Vol.16 (11), p.e1002967-e1002967 [Periódico revisado por pares]United States: Public Library of Science
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