The vacuum extractor in difficult labor.
D003466:Cultural Characteristics; D036861:Delivery, Obstetric; D005113:Extraction, Obstetrical / Q000379:methods*; D005260:Female; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D007746:Labor Presentation; D009549:Nigeria; D007744:Obstetric Labor Complications / Q000628:therapy*; D011247:Pregnancy; D014620:Vacuum Extraction, Obstetrical / Q000379:methods*