1. Postoperative pain experience: Results from a national survey suggest postoperative pain continues to be undermanaged;Apfelbaum;Anaesthesia and Analgesia,2003
2. Argoff, C.E. & Fine, P.G. (2010). Application of multimodal therapy for acute pain. An interactive clinical case challenge [on line]. Retrieved August 21, 2012, from http://www.medscapeCME.com/nurses.
3. Chronic pain in Canada: Have we improved our management of chronic non cancer pain;Boulagner;Pain Research Management,2007
4. Postoperative pain management: Study of patients' level of pain and satisfaction with health care providers' responsiveness to their reports of pain;Chung;Nursing and Health Sciences,2003
5. Cleeland, D. S. (2009). The Brief Pain Inventory: User Guide. Retrieved November 8, 2012, from:http://www.mdanderson.org/education-and-research/departments-programs-and-labs/departments-and-divisions/symptom-research/symptom-assessment-tools/BPI_UserGuide.pdf.