Fetal growth. Liveborn birth weights for gestational age of white middle class infants.
D001724:Birth Weight; D005314:Embryonic and Fetal Development; D004777:Environment; D005260:Female; D005865:Gestational Age; D006306:Health Surveys; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D012923:Social Class; D012959:Socioeconomic Factors / Q000145:classification