1. Booss J, Drake A, Kerns RD, Pain as the fifth vital sign toolkit. Report (revised), Veterans Health Administration, Washington, DC, October 2000.
2. Berry PH, Chapman CR, Covington EC, Pain: current understanding of assessment, management and treatments. Report, National Pharmaceutical Council and Joint Commission of Healthcare Organisations, Washington, DC, December 2001.
3. Improving Reassessment and Documentation of Pain Management