Quantitative studies in fetal electrocardiography. 3. Comparison of breech and cephalic presentation data; endocrine basis for fetal rotation, a hypothesis.
D001724:Birth Weight; D003201:Computers; D004562:Electrocardiography; D005260:Female; D005318:Fetal Heart; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007746:Labor Presentation; D008297:Male; D008433:Mathematics; D011247:Pregnancy; D012737:Sex Factors