title: Obstetrics: state of the science, 1988.
authors.forename: R A
authors.initials: RA
authors.lastname: Chez
mesh_terms: D005260:Female; D005323:Fetal Monitoring; D006801:Humans; D007226:Infant Mortality / Q000639:trends; D009774:Obstetrics / Q000639:trends*; D011247:Pregnancy; D014463:Ultrasonography; D014481:United States