1. Is Oxycodone Efficacy Reflected in Serum Concentrations
Is Oxycodone Efficacy Reflected in Serum Concentrations? A Multicenter, Cross- Sectional Study in 456 Adult Cancer Patients 
Trine Naalsund Andreassen, MSc, Pål Klepstad, MD, PhD, Andrew Davies, MD, Kristin Bjordal, MD, PhD, Staffan Lundström, MD, PhD, Stein Kaasa, MD, PhD, Ola Dale, MD, PhD 
Journal of Pain and Symptom Management 
Volume 43, Issue 4, Pages (April 2012)
DOI: /j.jpainsymman
Copyright © 2012 U.S. Cancer Pain Relief Committee Terms and Conditions

2. Fig. 1
Distribution of the pain intensity measured by NRS 0–10. Median score was three, corresponding to “mild pain.”
Journal of Pain and Symptom Management  , DOI: ( /j.jpainsymman )
Copyright © 2012 U.S. Cancer Pain Relief Committee Terms and Conditions