Maternal and child health. Increasing frequency of low birth weight (LBW), 1981-1991.
D000293:Adolescent; D000328:Adult; D001741:Black or African American; D005260:Female; D006801:Humans; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D007234:Infant, Premature; D009035:Mothers; D011247:Pregnancy; D011295:Prenatal Care; D012307:Risk Factors; D014481:United States / Q000453:epidemiology; D044465:White People