1. Institute of Medicine (US) Committee on the Future of Emergency Care in the United States Health System (2006) Hospital-based emergency care: at the breaking point. Washington, DC; ISBN-10: 0-309-10173-5
2. US Government Accountability Office (2009) Emergency department crowding. GAO-09-347
3. Romanow Commission: CAEP submission on emergency department overcrowding. http://www.caep.ca/page.asp?id=C66C924CF39543D9AF7E62BAB1A67835
4. ACEM statement on emergency department overcrowding. http://www.acem.org.au/media/policies_and_guidelines/S57_-_Statement_on_ED_Overcr.pdf
5. Derlet R, Richards J, Kravitz R (2001) Frequent overcrowding in U.S. emergency departments. Acad Emerg Med 8(2):151–155