title: Emergency department observation wards.
authors.forename: D A
authors.initials: DA
authors.lastname: Campbell
authors.forename: P
authors.initials: P
authors.lastname: Greenberg
authors.forename: P
authors.initials: P
authors.lastname: Cameron
mesh_terms: D004636:Emergency Service, Hospital / Q000458:organization & administration; D006757:Hospital Units / Q000458:organization & administration; D006801:Humans; D019370:Observation; D010346:Patient Care Management / Q000458:organization & administration