Solving the problem of cervical dystocia and prolonged labor.
D004420:Dystocia / Q000628:therapy*; D005113:Extraction, Obstetrical / Q000379:methods*; D005260:Female; D006801:Humans; D007746:Labor Presentation; D007744:Obstetric Labor Complications / Q000628:therapy*; D009772:Obstetrical Forceps; D011247:Pregnancy