Braveman, P.Barclay, C.Abstract available at publisher's website.DisparitiesPrenatal & Pediatric HealthChronic Illness & DiseasesHealth Risk Factorsadultchildchronic diseaseeducational levelEurope/epidemiologyhealth statushealth status disparitieslongitudinal studiesmorbiditymortalitysocial classsocioeconomic factorsUnited States/epidemiologyHealth Disparities Beginning in Childhood: A Life-Course PerspectiveArticle