title: Weapon changes over time after initiation of a comprehensive weapon surveillance system.
authors.forename: C B
authors.initials: CB
authors.lastname: Irvin
authors.forename: R C
authors.initials: RC
authors.lastname: Habas
mesh_terms: D004636:Emergency Service, Hospital / Q000592:standards*; D005389:Firearms; D006801:Humans; D016272:Occupational Health; D012637:Security Measures / Q000706:statistics & numerical data; D014754:Violence / Q000517:prevention & control* / Q000639:trends