Infants with low birth weight born before their mothers started to smoke cigarettes.
D000328:Adult; D000367:Age Factors; D001724:Birth Weight; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D010298:Parity; D011247:Pregnancy; D044469:Racial Groups; D012907:Smoking; D013997:Time Factors