Changing patterns in maternity care.
D000698:Analgesia; D003955:Diagnostic Tests, Routine; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007743:Labor, Obstetric; D008427:Maternal Health Services / Q000639:trends*; D009773:Obstetric Nursing / Q000639:trends*; D010353:Patient Education as Topic; D011247:Pregnancy