Absence of one umbilical artery. Analysis of 20 in a 5-year study.
D001158:Arteries / Q000002:abnormalities*; D005260:Female; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D008297:Male; D010920:Placenta / Q000002:abnormalities; D011379:Prognosis; D014469:Umbilical Arteries / Q000002:abnormalities; D014470:Umbilical Cord