Letter: Rubella in pregnancy: a difficult diagnosis.
D000914:Antibodies, Viral / Q000032:analysis; D005260:Female; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D007114:Immunization; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000175:diagnosis*; D012409:Rubella / Q000175:diagnosis* / Q000276:immunology / Q000517:prevention & control
D000914:Antibodies, Viral