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Analysis of doppler blood flow velocity waveforms of the fetal umbilical artery in normal pregnancies.1991 August;34(8)
Fetal umbilical artery flow velocity waveforms and subsequent perinatal outcome.1992 February;35(2)
Comparison of predictability of fetal acidosis between umbilical artery velocity waveforms and descending thoracic aorta blood flow.1993 October;36(10)