References
- Chou R, Clark E, Helfand M. Comparative efficacy and safety of long-acting oral opioids for chronic non-cancer pain: A systematic review. J Pain Symptom Manage 2003; 26(5)1026–48
- Compton P, Athanasos P, Elashoff D. Withdrawal hyperalgesia after acute opioid physical dependence in nonaddicted humans: A preliminary study. J Pain 2003; 4(9)511–19
- Angst M S, Koppert W, Pahl I, Clark D J, Schmelz M. Short-term infusion of the >-opioid agonist remifentanil in humans causes hyperalgesia during withdrawal. Pain 2003; 106(1–2)49–57