1. American opiophobia: customary underutilization of opioid analgesics;Morgan;Advances in Alcohol and Substance Abuse,1985
2. Assessment and management of pain;Hansen;JAMA,2000
3. What is the issue? Pseudoaddiction or undertreatment of pain;Kowal;Nursing Economics,1999
4. The tragedy of needless pain;Melzack;Sci Am,1990
5. The barriers to adequate pain management with opioids analgesics;Hill;Semin Oncol,1993