Effectiveness of opioids for chronic noncancer pain: a two-year multicenter, prospective cohort study with propensity score matching

Chronic pain (CP) is a major and debilitating health problem.9 It has an estimated prevalence of 20% in the European population and is an important cause of direct and indirect healthcare costs, quality of life impairment and has a significant impact on patients’ and their families’ lives.8,51

from The Journal of Pain http://bit.ly/2EWw44V
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