Cesarean section; current trends and perspectives.
D001946:Breech Presentation; D002585:Cesarean Section / Q000009:adverse effects / Q000706:statistics & numerical data / Q000639:trends*; D005260:Female; D005316:Fetal Distress / Q000628:therapy; D006801:Humans; D008428:Maternal Mortality; D009017:Morbidity; D010387:Pelvimetry; D011247:Pregnancy; D012306:Risk; D014481:United States