References
- The Federation of State Medical Boards of the United States. Model Guidelines for the Use of Controlled Substances for the Treatment of Pain. FSMBUS, Euliss, TX 1998
- American Academy of Pain Medicine and the American Pain Society. The use of opioids for the treatment of chronic pain. A consensus statement from the American Academy of Pain Medicine and the American Pain Society. Clin J Pain Mar, 1997; 13(1)6–8