title: Pre-existing conditions contribute to rising U.S. maternal mortality rates.
authors.forename: Maria
authors.initials: M
authors.lastname: Castellucci
mesh_terms: D005260:Female; D006801:Humans; D008428:Maternal Mortality / Q000639:trends*; D064266:Preexisting Condition Coverage; D014481:United States / Q000453:epidemiology