title: Locked twins under epidural analgesia.
mesh_terms: D000328:Adult; D000767:Anesthesia, Epidural; D000773:Anesthesia, Obstetrical; D036861:Delivery, Obstetric; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007746:Labor Presentation; D008297:Male; D011247:Pregnancy; D011272:Pregnancy, Multiple; D014427:Twins