White AA, Wright SW, Blanco R, Lemonds B, Sisco J, Bledsoe S, Irwin C, Isenhour J, Pichert JW. 2004. Cause-and-effect analysis of risk management files to assess patient care in the emergency department. Academic Emergency Medicine 11(10):1035–1041.
Williams J, Ehrlich P, Prescott J. 2001. Emergency medical care in rural America. Annals of Emergency Medicine 38(3):323–327.
Yoo GJ, Dawson-Rose C, Chang YJ, Aquino J. 2001. Factors Impacting the Availability of Emergency On-Call Coverage in California: Report to the California State University Faculty Fellows Program. [Online]. Available: http://www.csus.edu/calst/Government_Affairs/reports/Emergency_Room_On-Call_Coverage.pdf [accessed June 23, 2005].