1. Overcrowding in the nation's emergency departments: complex causes and disturbing effects;Derlet;Ann Emerg Med,2000
2. Effect of hospital occupancy on emergency department length of stay and patient disposition;Forster;Ann Emerg Med,2003
3. Emergency department overcrowding: a national crisis;McCabe;Acad Med,2001
4. The Joint Commission Specifications Manual for National Hospital Inpatient Quality Measures, Version 4.4 http://www.jointcommission.org/specifications_manual_for_national_hospital_inpatient_quality_measures.aspx