Letter: Drugs in pregnancy.
D000014:Abnormalities, Drug-Induced / Q000209:etiology*; D000773:Anesthesia, Obstetrical / Q000009:adverse effects*; D005260:Female; D005333:Fetus / Q000187:drug effects*; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D008614:Meperidine / Q000009:adverse effects*; D011247:Pregnancy; D011446:Prospective Studies
D008614:Meperidine