Letter: Cigarette smoking, infant birth weight, and perinatal mortality rates.
D000293:Adolescent; D000328:Adult; D001724:Birth Weight; D005260:Female; D005313:Fetal Death / Q000453:epidemiology*; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D007234:Infant, Premature; D011247:Pregnancy; D011446:Prospective Studies; D012189:Retrospective Studies; D012907:Smoking / Q000150:complications*