(Sources: [A] Agency for Health Care Policy and Research. (1994). Management of cancer pain. Clinical practice guideline. Rockville, MD: Public Health Service, US Department of Health and Human Services (DHHS); [B] From Hockenberry, M. J., Wilson, D., & Winkelstein, M. L. (2005). Wong’s essentials of pediatric nursing [7th ed.] [p. 1259]. St. Louis: Mosby. Used with permission. Copyright, Mosby.)