title: Hospital emergency rooms: an endangered species?
authors.forename: R E
authors.initials: RE
authors.lastname: Margolis
mesh_terms: D000163:Acquired Immunodeficiency Syndrome; D004636:Emergency Service, Hospital / Q000706:statistics & numerical data*; D006300:Health Services Misuse / Q000639:trends*; D006801:Humans; D019966:Substance-Related Disorders; D014481:United States