Word: Antepartum Nonstress Testing Frequency Ultrasound ...

Zimmermann P, Albäck T, Koskinen J, Vaalamo P, Tuimala R, Ranta T. Doppler flow velocimetry of the umbilical artery, uteroplacental arteries and fetal middle cerebral artery in prolonged pregnancy. Ultrasound in Obstetrics and Gynecology. 1995;5(3):189–197. ................
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