1. National hospital ambulatory medical care survey: 2004 emergency department summary;McCaig;Adv Data,2006
2. Overcrowding crisis in our nation's emergency departments: is our safety net unraveling?;Committee on Pediatric Emergency Medicine, American Academy of Pediatrics;Pediatrics,2004
3. Emergency departments: an essential access point to care;American Hospital Association;Trend Watch,2001
4. Committee on the future of emergency care in the U.S. Health System, hospital-based emergency care: at the breaking point;Institute of Medicine,2007