1. World Health Organization. Cancer as a global problem. Weekly Epidemiol Records. 1984;59: 125–126.
2. Bonica JJ. Importance of the problem. In: Bonica JJ, Ventafridda V, eds. Advances in Pain Research and Therapy. New York: Raven Press; 1979;2.
3. Bonica JJ. Treatment of cancer pain: current status and future needs. In: Fields HL, ed. Advances in Pain Research and Therapy. New York: Raven Press, 1985;9:589–616.
4. Bonica JJ, Ventafridda V, Twycross RG. Cancer pain. In: Bonica JJ, ed. The Management of Pain. Philadelphia, Pa: Lea & Febiger; 1990;400–460.
5. Baines M, Kirkham SR. Cancer pain. In: Wall PD, Melzack R, eds. Textbook of Pain. New York: Churchill Livingstone; 1989;590–597.