Background: Mapped the sources and types of evidence available on psychosocial interventions in the treatment of opioid use disorder (OUD), with and without pharmacotherapies.
Methods: Six electronic databases were searched for research published until July 1, 2019. Included studies were coded on publication characteristics, evidence sources, treatment settings and modalities, study populations and patient characteristics, intervention(s) offered to patients, research questions addressed in experimental studies, and outcomes investigated.
Objective: A great deal of epidemiologic evidence has indicated that fruits and vegetables are protective against numerous forms of cancer. However, there are many gaps in our knowledge.
Methods: In this pilot study we reviewed more than 200 cohort and case-control studies to determine the shape of the dose-response relationship (i.