1. Redefining the Emergency Department: Five Strategies for Reducing Unnecessary Visits;Health Care Advisory Board,1993
2. Emergency Departments: Unevenly Affected by Growth and Change in Patient Use,1993
3. Primary care and public emergency department overcrowding;Grumbach;Am J Public Health,1993
4. Patients who leave the emergency department without medical evaluation: Severity of illness and need for acute care;Stevens;Ann Emerg Med,1991
5. Hospital and emergency department overcrowding;American College of Emergency Physicians;Ann Emerg Med,1990