Smoking during pregnancy increases risk of cleft lip and palate.
D002971:Cleft Lip / Q000453:epidemiology / Q000209:etiology*; D002972:Cleft Palate / Q000453:epidemiology / Q000209:etiology*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011297:Prenatal Exposure Delayed Effects; D012907:Smoking / Q000009:adverse effects* / Q000453:epidemiology; D014481:United States / Q000453:epidemiology