Singh, G. K.Kogan, M. D.Abstract available at publisher's website.DisparitiesPrenatal & Pediatric Healthinfant mortalityneonatalpostneonataldeprivationmaternal educationsocial inequalitylow birth weighttrendUnited StatesPersistent Socioeconomic Disparities in Infant, Neonatal, and Postneonatal Mortality Rates in the United States, 1969-2001Article