title: "Back-up" at fetal transfusion.
mesh_terms: D001805:Blood Transfusion, Intrauterine; D005260:Female; D005333:Fetus / Q000000981:diagnostic imaging; D006801:Humans; D007746:Labor Presentation; D008722:Methods; D011187:Posture; D011247:Pregnancy; D011859:Radiography