[Delivery in an upright position: a future prospect at the dawn of the 21st Century].
D036861:Delivery, Obstetric / Q000379:methods*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007564:Japan; D007743:Labor, Obstetric; D008880:Midwifery / Q000639:trends*; D011247:Pregnancy