title: Clinical decision units in the emergency department: old concepts, new paradigms, and refined gate keeping.
authors.affiliation: Department of Emergency Medicine, General Informary of Leeds, The Leeds Teaching Hospital Trust, Leeds LS1 3EX, UK. taj.hassan@leedsth.nhs.uk
authors.forename: T B
authors.initials: TB
authors.lastname: Hassan
mesh_terms: D003657:Decision Making; D004636:Emergency Service, Hospital / Q000458:organization & administration*; D019317:Evidence-Based Medicine; D006302:Health Services Research; D006801:Humans; D006113:United Kingdom