Social aspects of low birth weight.
D004519:Education, Special; D004522:Educational Status; D005193:Family Planning Services; D005865:Gestational Age; D006801:Humans; D007226:Infant Mortality; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D008607:Intellectual Disability / Q000209:etiology; D012306:Risk; D012924:Social Conditions; D012959:Socioeconomic Factors