1. Critical appraisal of papers describing triage systems;Haerden;Acad. Emerg. Med.,1999
2. Triage and emergency department services;Williams;Ann. Emerg. Med.,1996
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4. Editorial: Clinton's health reform and emergency department volumes: a return visit;Weill;Ann. Emerg. Med.,1993
5. Variation in demand for A & E departments in England 1974-84;Milner;J. Epidemiol. Commun. Health,1988