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A validation study of the WHO analgesic ladder: a two-step vs three-step strategy

NursingFamily MedicineMedical Decision MakingPrimary CarePain TherapyHealth SciencesPain MedicineWho Analgesic LadderPatient SafetyPostoperative Pain ManagementOutcomes ResearchPreoperative PainPain ManagementMedical Decision AnalysisMedicineValidation StudyHealth Services ResearchPain Research