title: Emergency medicine.
authors.affiliation: Carolinas Medical Center, Charlotte, NC, USA.
authors.forename: J A
authors.initials: JA
authors.lastname: Marx
mesh_terms: D002637:Chest Pain; D004630:Emergencies; D004635:Emergency Medicine / Q000592:standards / Q000639:trends*; D006801:Humans; D007258:Informed Consent; D017410:Practice Guidelines as Topic; D012106:Research; D014463:Ultrasonography