Difficult vaginal deliveries and how to avoid them.
D002585:Cesarean Section; D036861:Delivery, Obstetric; D004420:Dystocia / Q000628:therapy; D005260:Female; D006801:Humans; D007746:Labor Presentation; D007744:Obstetric Labor Complications / Q000517:prevention & control / Q000628:therapy*; D010388:Pelvis / Q000503:physiopathology; D011247:Pregnancy