Why are neonatal mortality rates lower in small black infants than in white infants in similar birth weight?
D001741:Black or African American; D005260:Female; D006801:Humans; D007226:Infant Mortality; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D008297:Male; D010414:Pennsylvania; D012959:Socioeconomic Factors