Clinical experimentation in obstetrics.
D002986:Clinical Trials as Topic; D005260:Female; D005313:Fetal Death / Q000517:prevention & control; D006801:Humans; D007231:Infant, Newborn; D009774:Obstetrics; D011247:Pregnancy; D011256:Pregnancy Outcome; D011897:Random Allocation; D012107:Research Design