Editorial: Social disadvantage.
D002648:Child; D002654:Child Care; D002675:Child, Preschool; D004493:Education; D004521:Educational Measurement; D005500:Follow-Up Studies; D006306:Health Surveys; D006801:Humans; D007223:Infant; D007226:Infant Mortality; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000453:epidemiology; D009790:Occupations; D012923:Social Class; D012959:Socioeconomic Factors; D006113:United Kingdom