title: Carol Sakala's letter from North America: an uncontrolled experiment: elective delivery predominates in the United States.
mesh_terms: D002585:Cesarean Section / Q000706:statistics & numerical data; D036861:Delivery, Obstetric / Q000379:methods* / Q000706:statistics & numerical data / Q000639:trends; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D011247:Pregnancy; D014481:United States; D019564:Unnecessary Procedures / Q000009:adverse effects / Q000706:statistics & numerical data / Q000639:trends