title: Emergency department care: when needed--not when better choices are unavailable.
authors.forename: Mitchell H
authors.initials: MH
authors.lastname: Katz
mesh_terms: D004636:Emergency Service, Hospital / Q000191:economics* / Q000706:statistics & numerical data*; D005260:Female; D006297:Health Services Accessibility; D006801:Humans; D019458:Insurance Coverage; D007348:Insurance, Health; D008297:Male; D017057:Medically Uninsured / Q000706:statistics & numerical data*