1. The effect of transdermal fentanyl treatment on serum cortisol concentrations in patients with non-cancer pain 
Emine Ozyuvaci, MD, Nergis Yanmaz Alnigenis, MD, Aysel Altan, MD 
Journal of Pain and Symptom Management 
Volume 28, Issue 3, Pages (September 2004)
DOI: /j.jpainsymman

2. Figure 1
Basal cortisol concentrations (μg/dL) and the levels on Days 30, 60, and 90 of pain treatment.
Journal of Pain and Symptom Management  , DOI: ( /j.jpainsymman )

3. Figure 2
Initial VAS scores of the patients and the scores on Days 30, 60 and 90 of pain treatment.
Journal of Pain and Symptom Management  , DOI: ( /j.jpainsymman )