Maternal smoking in pregnancy.
D005260:Female; D006801:Humans; D007226:Infant Mortality; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D009035:Mothers / Q000523:psychology; D011247:Pregnancy; D011248:Pregnancy Complications / Q000209:etiology*; D012907:Smoking / Q000009:adverse effects*; D014028:Tobacco Smoke Pollution / Q000009:adverse effects
D014028:Tobacco Smoke Pollution