Letter: Drugs in pregnancy.
D001921:Brain / Q000187:drug effects*; D001927:Brain Diseases / Q000139:chemically induced*; D005260:Female; D005333:Fetus / Q000187:drug effects*; D006801:Humans; D008614:Meperidine / Q000009:adverse effects*; D011247:Pregnancy
D008614:Meperidine