Journal of Pain · 2008 · 474 citations · 30 references
NursingPharmacotherapyPain ManagementPain MedicinePain ScienceOpioid AnalgesicsOpioid ManagementOpioid TherapyPain AssessmentPain MeasurementPain PsychologyOpioid Analgesic ManagementOpioid Use EvaluationPain Assessment Standards
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Cleeland Cs, Ryan Km · PubMed · 1994 · 5.3K citations