1. Korean Society for Hospice and Palliative Care, Korean Cancer Study Group. Cancer pain relief guideline. 2001. Seoul: Korean Society for Hospice and Palliative Care, Korean Cancer Study Group.
2. Heo DS. Symptom control. J Korean Med Assoc. 1998. 41:1125–1130.
3. Yun YH, Kim CH. Resident's knowledge and attitude towards cancer pain management. J Korean Acad Fam Med. 1997. 18:591–600.
4. NCCN clinical practice guidelines in oncology: adult cancer pain [Internet]. National Comprehensive Cancer Network. 2008. Washington: National Comprehensive Cancer Network;Available from:
http://www.nccn.org/.
5. Ahles TA, Blanchard EB, Ruckdeschel JC. The multidimensional nature of cancer-related pain. Pain. 1983. 17:277–288.
6. Daut RL, Cleeland CS. The prevalence and severity of pain in cancer. Cancer. 1982. 50:1913–1918.
7. American Pain Society Quality of Care Committee. Quality improvement guidelines for the treatment of acute pain and cancer pain. JAMA. 1995. 274:1874–1880.
8. Ventafridda V, Tamburini M, Caraceni A, De Conno F, Naldi F. A validation study of the WHO method for cancer pain relief. Cancer. 1987. 59:850–856.
9. Grond S, Zech D, Schug SA, Lynch J, Lehmann KA. Validation of World Health Organization guidelines for cancer pain relief during the last days and hours of life. J Pain Symptom Manage. 1991. 6:411–422.
10. Zech DF, Grond S, Lynch J, Hertel D, Lehmann KA. Validation of World Health Organization Guidelines for cancer pain relief: a 10-year prospective study. Pain. 1995. 63:65–76.
11. Portenoy RK, Lesage P. Management of cancer pain. Lancet. 1999. 353:1695–1700.
12. Kim KH, Jang WI, Joh YH, Choi IS, Park SR, Lee SY, et al. Evaluation of the adequacy of pain management in the admitted cancer patients. Korean J Hosp Palloat Care. 2001. 4:137–144.