1. Environmental noise as a cause of sleep disruption in an intermediate respiratory care unit;Aaron;Sleep,1996
2. Agency for Health Care Policy and Research: Acute Pain Management: Operative or Medical Procedures and Trauma. Clinical Practice Guideline,1992
3. Agency for Healthcare Research and Quality: Agency for Healthcare Research and Quality [online]. Available at: http://www.ahrq.gov (accessed)
4. Pain management in the critically ill: What do we know and how can we improve?;Alpen;AACN Clinical Issues,1994
5. American Association of Critical Care Nurses: Critical Care in the Nursing Curriculum,1992