1. Institute of Medicine Committee on the Future of Emergency Care in the U.S. Health System. Hospital-Based Emergency Care: At the Breaking Point Washington, DC: The National Academies Press; 2006.
2. General Accounting Office. Hospital Emergency Departments: Crowded Conditions Vary Among Hospitals and Communities. Washington: DC, 2003.
3. A conceptual model of emergency department crowding;Asplin;Ann Emerg Med,2003
4. Measuring crowding: time for a paradigm shift;Asplin;Acad Emerg Med,2006
5. Emergency department crowding and thrombolysis delays in acute myocardial infarction;Schull;Ann Emerg Med,2004